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Psicothema 2008. Vol. 20, nº 1, pp. 138-143                                                                                     ISSN 0214 - 9915 CODEN PSOTEG
www.psicothema.com                                                                                                                   Copyright © 2008 Psicothema




                       MCMI-II borderline personality disorder in anorexia
                                    and bulimia nervosa

                           Inmaculada Torres Pérez, Carmen del Río Sánchez and Mercedes Borda Mas
                                                                     University of Sevilla


                            The aim of the present study is to explore the MCMI-II personality style and MCMI-II possible disorder
                            of borderline personality (BPD) in various groups of women. 93 patients-31 anorexia nervosa restricting
                            subtype (ANr), 31 anorexia nervosa binge-eating/purging subtype (ANp), and 31 bulimia nervosa
                            purging subtype (BNp); 31 women at high risk for eating disorder or symptomatic control group (S-
                            CG) and 31 without known pathology or not symptomatic control group (NS-CG)-completed the Span-
                            ish version of the MCMI-II. The results revealed: (1) clinically significant borderline personality traits
                            [74>Base Rate (BR) <85]: 16.1% ANr, 12.9% ANp, and 45.2% BNp versus 3.2% of the S-CG and none
                            of the NS-CG; (2) possible disorder (BR>84): 29% ANr, 41.9% ANp and 29% BNp. According to the
                            MCM-II, women with BNp displayed more BPD traits than possible disorder (though these were more
                            severe). However, the probability of a possible disorder was higher in ANp (more disorders than traits).

                            Trastorno límite de personalidad según el MCMI-II en la anorexia y bulimia nerviosas. El objetivo del
                            presente trabajo es estudiar los rasgos de personalidad y el posible diagnóstico de Trastorno Límite de
                            la Personalidad (TLP) según el MCMI-II en diferentes grupos de mujeres. 93 pacientes: 31 con ano-
                            rexia nerviosa restrictiva (ANr), 31 con anorexia nerviosa compulsiva/purgativa (ANp) y 31 con
                            bulimia nerviosa purgativa (BNp); 31 mujeres en riesgo de desarrollar un trastorno de la conducta ali-
                            mentaria o grupo control sintomático (GC-S) y 31 sin patología conocida o grupo control no sinto-
                            mático (GC-NS) completaron la versión española del MCMI-II. Los resultados muestran: (1) rasgos
                            de personalidad límite clínicamente significativa [74>tasa base (TB)<85], 16.1% ANr, 12.9% ANp, y
                            45.2% BNp versus 3.2% en el GC-S y ninguno en el GC-NS; (2) posibles trastornos (TB>84), 29%
                            ANr, 41.9% ANp y 29% BNp. Se concluye que, a partir del MCMI-II, las mujeres con BNp mostra-
                            ron más rasgos de TLP que posibles diagnósticos (aunque cuando los presentaron éstos fueron más se-
                            veros). Sin embargo, la probabilidad de un posible trastorno fue mayor en las mujeres con ANp (más
                            trastornos que rasgos).




    A number of researchers have thoroughly studied the                             Levitt, & Sansone, 2005; Skodol et al., 1993; Vitousek & Manke,
relationship and comorbidity of eating disorders (ED) with                          1994; Wonderlich, Swift, Slotnick, & Goodman, 1990). Sansone &
personality disorders (PDs), being one of the most referenced the                   Levitt (2005) and Levitt (2005) consider that among those with an
comorbidity with the borderline personality disorder (BPD). It has                  ED, the explicit prevalence of BPD remains unknown. However,
been even regarded as an artifact or a bias of the elevated                         other researchers have not found that such association is frequent.
comorbidity rates of ED with PDs in general (Braun, Sunday, &                       Some have even suggested that there might be a conceptual
Halmi, 1994; Fahy, Eisler, & Russell, 1993; Grilo et al., 2003) and                 confusion between BN and BPD, due to the overlap between the
specifically with the BPD by the assessment methods used in the                     symptomatology inherent in both disorders (Davis, Claridge, &
first studies that overestimated the diagnosis of this disorder (Pope               Cerullo, 1997; Meyer, Leung, Ferry, & Mann, 2001; Pope &
& Hudson, 1989).                                                                    Hudson, 1989; Wonderlich, 1995). In the case of AN, the BPD
    Several studies refer to BPD as the most characteristic in women                diagnosis is more frequent in the purging subgroup, whereas the
with an ED, especially in those with bulimia nervosa (BN), with                     restricting subtype shows with more frequency other PDs
percentages ranging from 2% to 50% (Grilo et al., 2003; Herzog,                     (obsessive-compulsive, avoidant and schizoid) (Sansone et al.,
Keller, Sacks, Yeh, & Lavory, 1992; Levin & Hyler, 1986; Sansone,                   2005; Vaz, 2003; Westen & Harnden-Fisher, 2001).
                                                                                       Currently, concern has been focused on the study of certain
                                                                                    personality features. There is empirical evidence of the
                                                                                    involvement of specific features such as impulsivity, lack of
Fecha recepción: 11-12-06 • Fecha aceptación: 17-9-07                               control or self-aggressiveness, mainly in patients with BN (Fahy
Correspondencia: Inmaculada Torres Pérez                                            & Eisler, 1993; Favaro & Santonnastaso, 2000; Favaro et al.,
Facultad de Psicología
                                                                                    2005). On the other hand, all these features are common to persons
Universidad de Sevilla
41018 Sevilla (Spain)                                                               having a BPD therefore it has been suggested that BN sometimes
E-mail: imtorres@telefonica.net                                                     may be conceptually confused with the BPD (Dolan, Evans, &
MCMI-II BORDERLINE PERSONALITY DISORDER IN ANOREXIA AND BULIMIA NERVOSA                                                           139

Norton, 1994; Zanarini et al., 1998). Furthermore, borderline                         Echeburúa (2006). If we consider the personality disorders as a
personality characteristics have been found as risk factors among                     continuum we understand that this procedure is especially
persons without psychiatric pathologies (Davis et al., 1997;                          appropriate. In addition, this has important implications in the
Steiger, Leung, & Houle, 1992).                                                       development of the therapy.
    The importance of knowing the relationship ED-BPD lies in                             The aim of this investigation is to study the presence of MCMI-
that persons with both disorders have a more severe clinical profile                  II BPD in (1) patients with BN purging-subtype (BNp), AN
(Skodol et al., 1993), as well as in the fact that the presence of a                  (restricting -ANr- and purging -ANp-); (2) women at risk for
BPD in these patients indicates a worse prognosis, especially in                      having any ED; and (3) women without known pathology. We
the case of BN (Wonderlich, Fullerton, Swift, & Klein, 1994). So                      have comparatively assessed in our sample, following the
far no research on BPD has been done focusing on the differential                     recommendations of Craig (1999), the presence of (a) clinical
study of the traits and the disorder in the same sample of women                      traits or features and behaviors characteristic of the BPD (BRs
with an ED. Also, according to our knowledge, there are currently                     scores >74 and <85), and (b) the disorder or complete syndrome
very few studies on personality disorders in ED which include                         (BR>84). Further, we studied whether there were significant
comparative groups which are either symptomatic or at risk for                        differences among the groups.
ED, and groups without known pathology.
    The MCMI-II (Millon, 1987), in spite of being one of the                                                         Methods
instruments that provides a more promising measure of
personality psychopathology in persons with a clinical ED                             Participants
(Tisdale, Pendleton, & Marler, 1990; Wiederman & Pryor, 1997),
has been little used so far in the ED (del Río, Torres, & Borda,                         A total of 155 women were studied, of whom 93 met the DSM-
2002; Echeburúa, Marañón, & Grijalvo, 2002; Espeleage,                                IV diagnostic criteria for some of the ED types: 31 women with
Mazzeo, Sherman, & Thompson, 2002; Martin, Motos, & del                               anorexia nervosa, restricting subtype (ANr) whose mean age was
Aguila, 2001; Wiederman & Prior, 1997). However, we consider                          22.23 years, 31 women with binge-eating/purging subtype (ANp)
that it may be a valid instrument, not so much for its sensitivity to                 whose mean age was 23.29 years, and 31 women with bulimia
distinguish specific patterns for the different ED, an aspect which                   nervosa, purging subtype (BNp) whose mean age was 23.16 years.
could not be established in different research (Torres, 2001;                         All of them were assessed for two authors of this work, specialists
Torres, del Río, & Borda, 2003), but for its usefulness in the                        in clinical psychology, before being assigned to a (homogeneous)
detection, in individual cases, of the possible personality                           group of out patient cognitive-behavior group therapy in Eating
alterations much quicker than with other interview instruments.                       Disorders Association (ADANER) in Seville (Spain).
    In relation to the interpretation of MCMI-II scores, Millon                       Furthermore, the remaining 62 women constituted the two
(1987) introduced the base rate (BR) score to the MCMI which is                       comparative groups: one with 31 women at high risk for having an
a transformed score that selects that point in the distribution of                    ED (symptomatic comparative group: S-CG) since they had a
scores whereby the patient has all of the disorder or syndrome at                     symptomatology typical thereof (EAT scores higher than or equal
the diagnostic level (BR>74). Therefore, Craig (1999) reported                        to 30, and BSQ scores higher than 104); with a mean age of 22.48
that BR scores greater of 84 on the personality scales are said to                    years. And a group of 31 women who did not have a known
be diagnostic. Although this approach does maximize diagnostic                        pathology (non-symptomatic comparative group: NS-CG) with a
efficiency, a problem arises with BR scores between 75 and 84,                        mean age of 22.61 years. In the selection of the sample,
which are said to reflect some of the behaviours and traits that                      sociodemographic characteristics were controlled, so that all the
define the disorder but not necessarily at a diagnostic level. This                   groups should be equivalent to each other; the variables were
procedure also has been used by others authors in our country,                        gender (constant), age (from 18 to 31 years), academic level,
among others López & Becoña (2006) and Fernández-Montalvo &                           marital status and socioeconomic level (see table 1).


                                                                             Table 1
                                                           Sociodemographic characteristics of the sample

                                                   ANr (n= 31)              ANp (n= 31)              BNp (n= 31)       S-CG (n=31)       NS-CG (n= 31)

          Age                                       Mean (SD)               Mean (SD)                Mean (SD)          Mean (SD)          Mean (SD)
                                                    22.23 (3.48)            23.29 (4.03)             23.16 (3.45)       22.48 (3.72)       22.61 (3.44)

     Marital status                                Percentage (n)          Percentage (n)           Percentage (n)     Percentage (n)     Percentage (n)
                                 Married              6.50 (2)                6.50 (2)                 3.20 (1)           6.50 (2)           3.20 (1)
                                 Single              93.50 (29)              93.50 (29)               96.80 (30)         93.50 (29)         96.80 (30)

    Academic level             High School           16.10 (5)                16.10 (5)               19.40 (6)          19.40 (6)          19.40 (6)
                           Professional training     16.10 (5)                19.40 (6)               19.40 (6)          19.40 (6)          16.10 (5)
                                University
                                Education           67.70 (21)               64.50 (20)               61.30 (19)        61.30 (19)         64.50 (20)

  Socio-economic level            Low                22.60 (7)                16.10 (5)                 29 (9)            29 (9)            25.80 (8)
                                 Medium             45.20 (14)               41.90 (13)               41.90 (13)        41.90 (13)         38.70 (12)
                                  High              32.30 (10)               41.90 (13)                 29 (9)            29 (9)           35.50 (11)
140                      INMACULADA TORRES PÉREZ, CARMEN DEL RÍO SÁNCHEZ AND MERCEDES BORDA MAS

Measures and procedure                                                alternative to the ANOVA of a factor. Where there were significant
                                                                      differences, we used the Mann-Whitney U test for two
    The sample of patients were selected from those women who         independent samples accompanied by the Bonferroni correction to
after the assessment process met the DSM-IV diagnostic criteria       control the error rate. Chi-square tests (two-tailed) were used for
for anorexia nervosa restricting subtype, for purging/bulimic         comparisons of the proportions of the participants.
subtype, and for bulimia nervosa purging subtype.
    We administrated to all women the Millon Clinical Multiaxial                                              Results
Inventory (MCMI-II) by Millon (1987) in its version adapted for
the Spanish population (Ávila, 2002). This instrument assesses            The BNp group shown mean scores higher on MCMI-II
different aspects of personality, according to the DSM-III-R          borderline features, followed by ANp group and lastly ANr group.
rating in 13 scales: 10 basic scales: schizoid (1), phobic (2),       There were significant differences among these three groups and
dependent (3), histrionic (4), narcissist (5), antisocial (6A),       the group of women without known pathology (NS-CG) (ANr:
aggressive-sadist (6B), compulsive (7), passive-aggressive (8),       U=229.50; p=0.000; ANp: U=180.00; p=0.000 and BNp:
and self-destructive/masochist (8B) and 3 pathological                U=136.50; p=0.000). Whereas when comparing the three ED
personality scales: schizotypal (S), borderline (C) and paranoid      groups with the group at risk for ED (S-CG), only participants
(P). All the inventory scales reflect in different degrees both       with ANp and BNp showed significant differences (U=308.50;
«features» and «states». For this study we have only used the         p=0.015 and U=194.50; p=0.000 respectively) (see table 2).
borderline scale (C), for which the reliability coefficients in its   Finally, in the comparison of the group without known pathology
Spanish version are: 0.90 for the clinical sample and 0.86 for the    (NS-CG) with the group at risk for ED (S-CG), we found
normal comparison group. The BR cutoff score recommended by           differences (U=308.50; p=0.000), the latter scoring halfway
Craig (1999) has been considered: BR scores equal to 85 or            between the group without known pathology and the groups with
higher, as possible disorder of BP, and BR between 75 and 84, as      ANp and BNp, but similar to the ANr group.
the reflection of some traits which define the disorder though not        As regards the presence of MCMI-II clinical traits of BPD
necessarily at a diagnostic level.                                    (BR>74 and <85), the women with some ED had similar scores
    To select comparative groups, we used:                            (see table 2). There were no group differences when comparing
                                                                      the three groups. Only one of the participants of the group at risk
   1. Eating Attitudes Test (EAT-40) by Garner & Garfinkel            for ED (S-CG) showed these features with a score similar to
      (1979); version adapted by Castro, Toro, Salamero, &            those with an ED. Finally, no women without a known pathology
      Guimerá (1991) in which the authors obtained a global           (NS-CG) showed clinical MCMI-II borderline personality traits.
      coefficient of validity of 0.61 (p<0.001). For the cutoff       With respect to the percentage of women who had them (see
      score of 30, they obtained a 67.9% sensitivity and 85.9%        figure 1 and table 2), the greatest proportion found was in the
      specificity.                                                    BNp group (45.2%, n=14), with significant differences, followed
   2. Body Shape Questionnaire (BSQ) by Cooper, Taylor,               by the ANr group (16.1%, n=5) and ANp (12.9%, n=4) (see
      Cooper, & Fairburn (1987), adapted by Raich et al. (1996).      figure 2).
      The Spanish version has shown good internal consistency
      (Cronbach’s alpha=0.97) and concurrent validity (Raich et
      al., 1996). The cutoff score established is 105.                                                        Table 2
                                                                                                Descriptive statistics of the sample

   Women in the two non-clinic groups who got a score equal to                                                    Descriptive statistics
or higher than 30 in the EAT-40 and a score equal to or higher than
                                                                          Groups           MCMI-II                N                Mean     SD
105 in the BSQ (mean EAT=40.87 and mean BSQ=132.48)
formed part of the symptomatic comparative group (S-CG). And               ANr           Borderline (C)*          31               67.90   23.693
those women whose scores were lower than 20 (the maximum                                  BR >74 <85              05               79.00   04.123
score they got was below 30) in the EAT, and scores lower than 95                           BR >85                09               93.77   03.700
(the maximum score they got was below 105) in the BSQ,
                                                                           ANp           Borderline (C)*          31               74.23   20.739
constituted the non-symptomatic comparative group (NS-CG)
                                                                                          BR >74 <85              04               81.75   02.872
(mean EAT-40=8.42 and mean BSQ=61.26).                                                      BR >85                13               93.69   06.101
   All the instruments were administered following the application
and correction rules recommended by the respective authors. All            BNp           Borderline (C)*          31               75.45   23.229
the women signed the Informed Consent Protocol before their                               BR >74 <85              14               80.21   03.042
                                                                                            BR >85                09               96.11   09.075
participation, following the Del Río’s recommendations (2005).
                                                                           S-CG          Borderline (C)*          31               62.55   08.567
Data analysis                                                                             BR >74 <85              01               78.00
                                                                                            BR >85                00
   Analyses were performed with the SPSS software, version
                                                                          NS-CG          Borderline (C)*          31               48.23   17.161
14.O.S for Windows. We conducted a descriptive analysis, when
                                                                                          BR >74 <85              00
assumptions of normality and homocedasticity were not met, we                               BR >85                00
employed non-parametric techniques for independent K samples
to compare among the participants their scores in the borderline       * Kruskal-Wallis test χ2= 36.577; l.g.= 4; p= 0.000
personality scale. We applied the Kruskal-Wallis H test as an           SD= Standard Deviation
MCMI-II BORDERLINE PERSONALITY DISORDER IN ANOREXIA AND BULIMIA NERVOSA                                              141

   With regard to the presence of the MCMI-II possible disorder                                 both in 29% of the cases (n=9) (see figure 3). In comparative
of BPD (BR>84), we observed that it was present in the three                                    groups, both the S-CG and the NS-CG, no case with a disorder of
groups having an ED (see figure 3); but not in the two comparative                              BPD was found (see figure 4).
groups. The women in the BNp group had the highest mean
scores, followed equally by those with ANr and ANp (there were                                                                  Discussion
no significant differences among the three groups) (see table 2).
All the mean scores were notably high (exceeding the BR score of                                    The findings of this study, in general, are consistent with those
90) which indicated the severity of the BPD in these patients,                                  described in the specialized literature, since a link has been found
especially in those with BNp (mean=96.11).                                                      between the BPD and bulimic characteristics in groups both
   As regards the percentages of patients with the possible                                     clinical and non-clinical (Carroll, Touyz, & Beamont, 1996; Davis
MCMI-II disorder of BPD, the highest percentage, 41.9% (n=13),                                  et al., 1997; Garner, Marcus, Halmi, & Loranger, 1989; Meyer et
were women with ANp, followed by the ANr and the BNp groups                                     al., 2001; Sansone et al., 2005; Steiger et al., 1992; Wonderlich et
                                                                                                al., 1994), although in our research the results from non-clinical
                                                                                                groups do not substantiate this relationship.
100                                                                                     ANr         Our findings evidenced that women having any type of ED
      90                                                                                ANp     showed in turn, in a significantly greater proportion, MCMI-II
      80                                                                                BNp*    borderline personality traits or style as well as the possible MCMI-
      70                                                                                S-CG    II BPD disorder, in comparison with the two comparative groups.
                                                       45.2
      60                                                                                NS-CG
                                                                                                Furthermore, the presence of disordered eating symptomatology in
      50                                                                                        the non-clinical groups was not associated with a greater
      40                      16.1                                                              probability of borderline personality style, not even mild, as
                                       12.9
      30
                                                                     3.2          0             proved by our results, since we found only one case in the S-CG
      20
                                                                                                group. Contrary to that, Steiger et al. (1992) and Davis et al.
      10
                                                                                                (1997) found that the relationship between bulimic and borderline
               0
                        ANr          ANp            BNp*        S-CG       NS-CG                personality characteristics in a non-clinical population were
                                                                                                frequent. And more recently, Meyer et al. (2001) found, in a non-
 * Comparisons (two tails) ANr and BNp (χ =33.82; p<0.001), ANp and BNp (χ2=23.08; <0.001)
                                                           2

                                                                                                clinical sample of women, that the borderline personality
Figure 1. Percentages of women having BPD traits (BR>74 and BR<85)                              characteristics might play an important role within a wide range of
                                                                                                non-healthy beliefs (core beliefs) and would specifically mediate
                   31                                                                           the relationship between these beliefs and the bulimic
                   30
                   29
                   28
                                                                                                symptomatology. Also, Davis et al. (1997) found that the
                   27
                   26                                                                           borderline personality features could be strong predictors of the
                   25
                   24
                   23                                                                           concern about weight since in some persons it might result in an
                   22
                   21
                   20
                                                                                                ED (together with narcissist personality characteristics).
                   19                                                                                Among the group of women with an ED, those who showed in
Participants




                   18
                   17
                   16
                   15
                                                                                                a greater proportion both MCMI-II borderline personality traits
                   14
                   13                                                                           and the possible BPD disorder of a more severe type, were those
                   12
                   11
                   10
                                                                                                who had a purging type symptomatology, i.e., those in the ANp
                    9
                    8                                                                           and BNp groups. These findings are consistent with those of other
                    7
                    6
                    5
                                                                                                researchers (Wonderlich et al., 1990). However, contrary to
                    4
                    3                                                                           expected we found that women with BNp showed more clinical
                    2
                    1
                    0
                                                                                                symptoms (clinical traits or personality style) than possible
                              ANr             ANp              BNp          S-CG      NS-CG     disorder of MCMI-II BPD (though in those who showed them they
Figure 2. Participants having BPD traits (BR>74 and BR<85)
                                                                                                               31
                                                                                                               30
                                                                                                               29
                                                                                                               28
                                                                                                               27
                                                                                                               26
                                                                                                               25
100                                                                                     ANr                    24
                                                                                                               23
                                                                                                               22
      90                                                                                ANp                    21
                                                                                                               20
      80                                                                                BNp                    19
                                                                                                Participants




                                                                                                               18
      70                                                                                S-CG                   17
                                       41.9                                                                    16
                                                                                        NS-CG                  15
      60                                                                                                       14
                              29                          29                                                   13
      50                                                                                                       12
                                                                                                               11
                                                                                                               10
      40                                                                                                        9
                                                                                                                8
      30                                                                                                        7
                                                                                                                6
                                                                       0      0                                 5
      20                                                                                                        4
                                                                                                                3
      10                                                                                                        2
                                                                                                                1
                                                                                                                0
           0
                        ANr          ANp            BNp         S-CG       NS-CG                                    ANr   ANp        BNp        S-CG        NS-CG

Figure 3. Percentages of women having the possible BPD (BR>84)                                  Figure 4: Participants having possible BPD (BR>84)
142                         INMACULADA TORRES PÉREZ, CARMEN DEL RÍO SÁNCHEZ AND MERCEDES BORDA MAS

were more severe), while women with ANp had borderline                            To sum up, women who had some subtype of ED also had
personality alterations in contrast to those in the BNp group (more           MCMI-II borderline personality traits as well as possible complete
disorders than traits).                                                       BPD disorder. Furthermore, the presence of disordered eating
    Another surprising finding contrary to the descriptions in the            symptomatology in persons who have not yet developed an ED
literature is the fact that restricting women (with ANr) showed               might be accompanied by a greater probability of borderline
possible disorder of BPD in the same proportion as those having               personality traits, though this data should be taken cautiously to
BNp. We believe that this finding would reflect, rather than a long-          confirm it should be studied with larger samples. In addition,
standing stable personality, a consequence of the diet restriction or         assessment of PD using self-report measures should be interpreted
of the effects of starvation, as recently Fessler (2002) suggested in         with caution in acutely symptomatic patients with eating disorders
his study.                                                                    (Kennedy, McKey, & Katz, 1990). The MCMI-II shows moderate
    We found some differences in our findings compared with the               convergent validity with similar self-report inventories but low
Wiederman & Pryor (1997), despite using the same measurement                  convergent validity with structured psychiatric rating scales
instrument, the MCMI-II, though they used a cutoff (BR) score of              (Craig, 1999). Therefore it should be used as screening instrument
>74. These researchers found significant differences as regards the           together with diagnostic interviews to confirm a PD diagnostic.
mean score obtained in the borderline scale between the women                     Therefore, it would be recommendable to add to the therapy
with ANp and those with BNp (we not found among the three                     plans for persons with ED specific therapeutic indications for the
groups with ED) and, on the other hand, they obtained percentages             possible comorbid PDs, as recently have suggested Levitt (2005)
of BPD higher in women with BNp (31.4%) -similar to 29% in our                in the case of ED/BDP patient. And, on the other hand, consider
sample-, followed by those with ANp (30.3%) -lower than 41.9%                 the need of introducing into prevention programs the study of
in our study- and finally, those in the ANr group (18.5%) -below              these personality features for the purpose of establishing the
the 29% in our sample.                                                        appropriate strategies for their control.




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Borderline Personality Disorder In Anorexia And Bulimia Nervosa

  • 1. Psicothema 2008. Vol. 20, nº 1, pp. 138-143 ISSN 0214 - 9915 CODEN PSOTEG www.psicothema.com Copyright © 2008 Psicothema MCMI-II borderline personality disorder in anorexia and bulimia nervosa Inmaculada Torres Pérez, Carmen del Río Sánchez and Mercedes Borda Mas University of Sevilla The aim of the present study is to explore the MCMI-II personality style and MCMI-II possible disorder of borderline personality (BPD) in various groups of women. 93 patients-31 anorexia nervosa restricting subtype (ANr), 31 anorexia nervosa binge-eating/purging subtype (ANp), and 31 bulimia nervosa purging subtype (BNp); 31 women at high risk for eating disorder or symptomatic control group (S- CG) and 31 without known pathology or not symptomatic control group (NS-CG)-completed the Span- ish version of the MCMI-II. The results revealed: (1) clinically significant borderline personality traits [74>Base Rate (BR) <85]: 16.1% ANr, 12.9% ANp, and 45.2% BNp versus 3.2% of the S-CG and none of the NS-CG; (2) possible disorder (BR>84): 29% ANr, 41.9% ANp and 29% BNp. According to the MCM-II, women with BNp displayed more BPD traits than possible disorder (though these were more severe). However, the probability of a possible disorder was higher in ANp (more disorders than traits). Trastorno límite de personalidad según el MCMI-II en la anorexia y bulimia nerviosas. El objetivo del presente trabajo es estudiar los rasgos de personalidad y el posible diagnóstico de Trastorno Límite de la Personalidad (TLP) según el MCMI-II en diferentes grupos de mujeres. 93 pacientes: 31 con ano- rexia nerviosa restrictiva (ANr), 31 con anorexia nerviosa compulsiva/purgativa (ANp) y 31 con bulimia nerviosa purgativa (BNp); 31 mujeres en riesgo de desarrollar un trastorno de la conducta ali- mentaria o grupo control sintomático (GC-S) y 31 sin patología conocida o grupo control no sinto- mático (GC-NS) completaron la versión española del MCMI-II. Los resultados muestran: (1) rasgos de personalidad límite clínicamente significativa [74>tasa base (TB)<85], 16.1% ANr, 12.9% ANp, y 45.2% BNp versus 3.2% en el GC-S y ninguno en el GC-NS; (2) posibles trastornos (TB>84), 29% ANr, 41.9% ANp y 29% BNp. Se concluye que, a partir del MCMI-II, las mujeres con BNp mostra- ron más rasgos de TLP que posibles diagnósticos (aunque cuando los presentaron éstos fueron más se- veros). Sin embargo, la probabilidad de un posible trastorno fue mayor en las mujeres con ANp (más trastornos que rasgos). A number of researchers have thoroughly studied the Levitt, & Sansone, 2005; Skodol et al., 1993; Vitousek & Manke, relationship and comorbidity of eating disorders (ED) with 1994; Wonderlich, Swift, Slotnick, & Goodman, 1990). Sansone & personality disorders (PDs), being one of the most referenced the Levitt (2005) and Levitt (2005) consider that among those with an comorbidity with the borderline personality disorder (BPD). It has ED, the explicit prevalence of BPD remains unknown. However, been even regarded as an artifact or a bias of the elevated other researchers have not found that such association is frequent. comorbidity rates of ED with PDs in general (Braun, Sunday, & Some have even suggested that there might be a conceptual Halmi, 1994; Fahy, Eisler, & Russell, 1993; Grilo et al., 2003) and confusion between BN and BPD, due to the overlap between the specifically with the BPD by the assessment methods used in the symptomatology inherent in both disorders (Davis, Claridge, & first studies that overestimated the diagnosis of this disorder (Pope Cerullo, 1997; Meyer, Leung, Ferry, & Mann, 2001; Pope & & Hudson, 1989). Hudson, 1989; Wonderlich, 1995). In the case of AN, the BPD Several studies refer to BPD as the most characteristic in women diagnosis is more frequent in the purging subgroup, whereas the with an ED, especially in those with bulimia nervosa (BN), with restricting subtype shows with more frequency other PDs percentages ranging from 2% to 50% (Grilo et al., 2003; Herzog, (obsessive-compulsive, avoidant and schizoid) (Sansone et al., Keller, Sacks, Yeh, & Lavory, 1992; Levin & Hyler, 1986; Sansone, 2005; Vaz, 2003; Westen & Harnden-Fisher, 2001). Currently, concern has been focused on the study of certain personality features. There is empirical evidence of the involvement of specific features such as impulsivity, lack of Fecha recepción: 11-12-06 • Fecha aceptación: 17-9-07 control or self-aggressiveness, mainly in patients with BN (Fahy Correspondencia: Inmaculada Torres Pérez & Eisler, 1993; Favaro & Santonnastaso, 2000; Favaro et al., Facultad de Psicología 2005). On the other hand, all these features are common to persons Universidad de Sevilla 41018 Sevilla (Spain) having a BPD therefore it has been suggested that BN sometimes E-mail: imtorres@telefonica.net may be conceptually confused with the BPD (Dolan, Evans, &
  • 2. MCMI-II BORDERLINE PERSONALITY DISORDER IN ANOREXIA AND BULIMIA NERVOSA 139 Norton, 1994; Zanarini et al., 1998). Furthermore, borderline Echeburúa (2006). If we consider the personality disorders as a personality characteristics have been found as risk factors among continuum we understand that this procedure is especially persons without psychiatric pathologies (Davis et al., 1997; appropriate. In addition, this has important implications in the Steiger, Leung, & Houle, 1992). development of the therapy. The importance of knowing the relationship ED-BPD lies in The aim of this investigation is to study the presence of MCMI- that persons with both disorders have a more severe clinical profile II BPD in (1) patients with BN purging-subtype (BNp), AN (Skodol et al., 1993), as well as in the fact that the presence of a (restricting -ANr- and purging -ANp-); (2) women at risk for BPD in these patients indicates a worse prognosis, especially in having any ED; and (3) women without known pathology. We the case of BN (Wonderlich, Fullerton, Swift, & Klein, 1994). So have comparatively assessed in our sample, following the far no research on BPD has been done focusing on the differential recommendations of Craig (1999), the presence of (a) clinical study of the traits and the disorder in the same sample of women traits or features and behaviors characteristic of the BPD (BRs with an ED. Also, according to our knowledge, there are currently scores >74 and <85), and (b) the disorder or complete syndrome very few studies on personality disorders in ED which include (BR>84). Further, we studied whether there were significant comparative groups which are either symptomatic or at risk for differences among the groups. ED, and groups without known pathology. The MCMI-II (Millon, 1987), in spite of being one of the Methods instruments that provides a more promising measure of personality psychopathology in persons with a clinical ED Participants (Tisdale, Pendleton, & Marler, 1990; Wiederman & Pryor, 1997), has been little used so far in the ED (del Río, Torres, & Borda, A total of 155 women were studied, of whom 93 met the DSM- 2002; Echeburúa, Marañón, & Grijalvo, 2002; Espeleage, IV diagnostic criteria for some of the ED types: 31 women with Mazzeo, Sherman, & Thompson, 2002; Martin, Motos, & del anorexia nervosa, restricting subtype (ANr) whose mean age was Aguila, 2001; Wiederman & Prior, 1997). However, we consider 22.23 years, 31 women with binge-eating/purging subtype (ANp) that it may be a valid instrument, not so much for its sensitivity to whose mean age was 23.29 years, and 31 women with bulimia distinguish specific patterns for the different ED, an aspect which nervosa, purging subtype (BNp) whose mean age was 23.16 years. could not be established in different research (Torres, 2001; All of them were assessed for two authors of this work, specialists Torres, del Río, & Borda, 2003), but for its usefulness in the in clinical psychology, before being assigned to a (homogeneous) detection, in individual cases, of the possible personality group of out patient cognitive-behavior group therapy in Eating alterations much quicker than with other interview instruments. Disorders Association (ADANER) in Seville (Spain). In relation to the interpretation of MCMI-II scores, Millon Furthermore, the remaining 62 women constituted the two (1987) introduced the base rate (BR) score to the MCMI which is comparative groups: one with 31 women at high risk for having an a transformed score that selects that point in the distribution of ED (symptomatic comparative group: S-CG) since they had a scores whereby the patient has all of the disorder or syndrome at symptomatology typical thereof (EAT scores higher than or equal the diagnostic level (BR>74). Therefore, Craig (1999) reported to 30, and BSQ scores higher than 104); with a mean age of 22.48 that BR scores greater of 84 on the personality scales are said to years. And a group of 31 women who did not have a known be diagnostic. Although this approach does maximize diagnostic pathology (non-symptomatic comparative group: NS-CG) with a efficiency, a problem arises with BR scores between 75 and 84, mean age of 22.61 years. In the selection of the sample, which are said to reflect some of the behaviours and traits that sociodemographic characteristics were controlled, so that all the define the disorder but not necessarily at a diagnostic level. This groups should be equivalent to each other; the variables were procedure also has been used by others authors in our country, gender (constant), age (from 18 to 31 years), academic level, among others López & Becoña (2006) and Fernández-Montalvo & marital status and socioeconomic level (see table 1). Table 1 Sociodemographic characteristics of the sample ANr (n= 31) ANp (n= 31) BNp (n= 31) S-CG (n=31) NS-CG (n= 31) Age Mean (SD) Mean (SD) Mean (SD) Mean (SD) Mean (SD) 22.23 (3.48) 23.29 (4.03) 23.16 (3.45) 22.48 (3.72) 22.61 (3.44) Marital status Percentage (n) Percentage (n) Percentage (n) Percentage (n) Percentage (n) Married 6.50 (2) 6.50 (2) 3.20 (1) 6.50 (2) 3.20 (1) Single 93.50 (29) 93.50 (29) 96.80 (30) 93.50 (29) 96.80 (30) Academic level High School 16.10 (5) 16.10 (5) 19.40 (6) 19.40 (6) 19.40 (6) Professional training 16.10 (5) 19.40 (6) 19.40 (6) 19.40 (6) 16.10 (5) University Education 67.70 (21) 64.50 (20) 61.30 (19) 61.30 (19) 64.50 (20) Socio-economic level Low 22.60 (7) 16.10 (5) 29 (9) 29 (9) 25.80 (8) Medium 45.20 (14) 41.90 (13) 41.90 (13) 41.90 (13) 38.70 (12) High 32.30 (10) 41.90 (13) 29 (9) 29 (9) 35.50 (11)
  • 3. 140 INMACULADA TORRES PÉREZ, CARMEN DEL RÍO SÁNCHEZ AND MERCEDES BORDA MAS Measures and procedure alternative to the ANOVA of a factor. Where there were significant differences, we used the Mann-Whitney U test for two The sample of patients were selected from those women who independent samples accompanied by the Bonferroni correction to after the assessment process met the DSM-IV diagnostic criteria control the error rate. Chi-square tests (two-tailed) were used for for anorexia nervosa restricting subtype, for purging/bulimic comparisons of the proportions of the participants. subtype, and for bulimia nervosa purging subtype. We administrated to all women the Millon Clinical Multiaxial Results Inventory (MCMI-II) by Millon (1987) in its version adapted for the Spanish population (Ávila, 2002). This instrument assesses The BNp group shown mean scores higher on MCMI-II different aspects of personality, according to the DSM-III-R borderline features, followed by ANp group and lastly ANr group. rating in 13 scales: 10 basic scales: schizoid (1), phobic (2), There were significant differences among these three groups and dependent (3), histrionic (4), narcissist (5), antisocial (6A), the group of women without known pathology (NS-CG) (ANr: aggressive-sadist (6B), compulsive (7), passive-aggressive (8), U=229.50; p=0.000; ANp: U=180.00; p=0.000 and BNp: and self-destructive/masochist (8B) and 3 pathological U=136.50; p=0.000). Whereas when comparing the three ED personality scales: schizotypal (S), borderline (C) and paranoid groups with the group at risk for ED (S-CG), only participants (P). All the inventory scales reflect in different degrees both with ANp and BNp showed significant differences (U=308.50; «features» and «states». For this study we have only used the p=0.015 and U=194.50; p=0.000 respectively) (see table 2). borderline scale (C), for which the reliability coefficients in its Finally, in the comparison of the group without known pathology Spanish version are: 0.90 for the clinical sample and 0.86 for the (NS-CG) with the group at risk for ED (S-CG), we found normal comparison group. The BR cutoff score recommended by differences (U=308.50; p=0.000), the latter scoring halfway Craig (1999) has been considered: BR scores equal to 85 or between the group without known pathology and the groups with higher, as possible disorder of BP, and BR between 75 and 84, as ANp and BNp, but similar to the ANr group. the reflection of some traits which define the disorder though not As regards the presence of MCMI-II clinical traits of BPD necessarily at a diagnostic level. (BR>74 and <85), the women with some ED had similar scores To select comparative groups, we used: (see table 2). There were no group differences when comparing the three groups. Only one of the participants of the group at risk 1. Eating Attitudes Test (EAT-40) by Garner & Garfinkel for ED (S-CG) showed these features with a score similar to (1979); version adapted by Castro, Toro, Salamero, & those with an ED. Finally, no women without a known pathology Guimerá (1991) in which the authors obtained a global (NS-CG) showed clinical MCMI-II borderline personality traits. coefficient of validity of 0.61 (p<0.001). For the cutoff With respect to the percentage of women who had them (see score of 30, they obtained a 67.9% sensitivity and 85.9% figure 1 and table 2), the greatest proportion found was in the specificity. BNp group (45.2%, n=14), with significant differences, followed 2. Body Shape Questionnaire (BSQ) by Cooper, Taylor, by the ANr group (16.1%, n=5) and ANp (12.9%, n=4) (see Cooper, & Fairburn (1987), adapted by Raich et al. (1996). figure 2). The Spanish version has shown good internal consistency (Cronbach’s alpha=0.97) and concurrent validity (Raich et al., 1996). The cutoff score established is 105. Table 2 Descriptive statistics of the sample Women in the two non-clinic groups who got a score equal to Descriptive statistics or higher than 30 in the EAT-40 and a score equal to or higher than Groups MCMI-II N Mean SD 105 in the BSQ (mean EAT=40.87 and mean BSQ=132.48) formed part of the symptomatic comparative group (S-CG). And ANr Borderline (C)* 31 67.90 23.693 those women whose scores were lower than 20 (the maximum BR >74 <85 05 79.00 04.123 score they got was below 30) in the EAT, and scores lower than 95 BR >85 09 93.77 03.700 (the maximum score they got was below 105) in the BSQ, ANp Borderline (C)* 31 74.23 20.739 constituted the non-symptomatic comparative group (NS-CG) BR >74 <85 04 81.75 02.872 (mean EAT-40=8.42 and mean BSQ=61.26). BR >85 13 93.69 06.101 All the instruments were administered following the application and correction rules recommended by the respective authors. All BNp Borderline (C)* 31 75.45 23.229 the women signed the Informed Consent Protocol before their BR >74 <85 14 80.21 03.042 BR >85 09 96.11 09.075 participation, following the Del Río’s recommendations (2005). S-CG Borderline (C)* 31 62.55 08.567 Data analysis BR >74 <85 01 78.00 BR >85 00 Analyses were performed with the SPSS software, version NS-CG Borderline (C)* 31 48.23 17.161 14.O.S for Windows. We conducted a descriptive analysis, when BR >74 <85 00 assumptions of normality and homocedasticity were not met, we BR >85 00 employed non-parametric techniques for independent K samples to compare among the participants their scores in the borderline * Kruskal-Wallis test χ2= 36.577; l.g.= 4; p= 0.000 personality scale. We applied the Kruskal-Wallis H test as an SD= Standard Deviation
  • 4. MCMI-II BORDERLINE PERSONALITY DISORDER IN ANOREXIA AND BULIMIA NERVOSA 141 With regard to the presence of the MCMI-II possible disorder both in 29% of the cases (n=9) (see figure 3). In comparative of BPD (BR>84), we observed that it was present in the three groups, both the S-CG and the NS-CG, no case with a disorder of groups having an ED (see figure 3); but not in the two comparative BPD was found (see figure 4). groups. The women in the BNp group had the highest mean scores, followed equally by those with ANr and ANp (there were Discussion no significant differences among the three groups) (see table 2). All the mean scores were notably high (exceeding the BR score of The findings of this study, in general, are consistent with those 90) which indicated the severity of the BPD in these patients, described in the specialized literature, since a link has been found especially in those with BNp (mean=96.11). between the BPD and bulimic characteristics in groups both As regards the percentages of patients with the possible clinical and non-clinical (Carroll, Touyz, & Beamont, 1996; Davis MCMI-II disorder of BPD, the highest percentage, 41.9% (n=13), et al., 1997; Garner, Marcus, Halmi, & Loranger, 1989; Meyer et were women with ANp, followed by the ANr and the BNp groups al., 2001; Sansone et al., 2005; Steiger et al., 1992; Wonderlich et al., 1994), although in our research the results from non-clinical groups do not substantiate this relationship. 100 ANr Our findings evidenced that women having any type of ED 90 ANp showed in turn, in a significantly greater proportion, MCMI-II 80 BNp* borderline personality traits or style as well as the possible MCMI- 70 S-CG II BPD disorder, in comparison with the two comparative groups. 45.2 60 NS-CG Furthermore, the presence of disordered eating symptomatology in 50 the non-clinical groups was not associated with a greater 40 16.1 probability of borderline personality style, not even mild, as 12.9 30 3.2 0 proved by our results, since we found only one case in the S-CG 20 group. Contrary to that, Steiger et al. (1992) and Davis et al. 10 (1997) found that the relationship between bulimic and borderline 0 ANr ANp BNp* S-CG NS-CG personality characteristics in a non-clinical population were frequent. And more recently, Meyer et al. (2001) found, in a non- * Comparisons (two tails) ANr and BNp (χ =33.82; p<0.001), ANp and BNp (χ2=23.08; <0.001) 2 clinical sample of women, that the borderline personality Figure 1. Percentages of women having BPD traits (BR>74 and BR<85) characteristics might play an important role within a wide range of non-healthy beliefs (core beliefs) and would specifically mediate 31 the relationship between these beliefs and the bulimic 30 29 28 symptomatology. Also, Davis et al. (1997) found that the 27 26 borderline personality features could be strong predictors of the 25 24 23 concern about weight since in some persons it might result in an 22 21 20 ED (together with narcissist personality characteristics). 19 Among the group of women with an ED, those who showed in Participants 18 17 16 15 a greater proportion both MCMI-II borderline personality traits 14 13 and the possible BPD disorder of a more severe type, were those 12 11 10 who had a purging type symptomatology, i.e., those in the ANp 9 8 and BNp groups. These findings are consistent with those of other 7 6 5 researchers (Wonderlich et al., 1990). However, contrary to 4 3 expected we found that women with BNp showed more clinical 2 1 0 symptoms (clinical traits or personality style) than possible ANr ANp BNp S-CG NS-CG disorder of MCMI-II BPD (though in those who showed them they Figure 2. Participants having BPD traits (BR>74 and BR<85) 31 30 29 28 27 26 25 100 ANr 24 23 22 90 ANp 21 20 80 BNp 19 Participants 18 70 S-CG 17 41.9 16 NS-CG 15 60 14 29 29 13 50 12 11 10 40 9 8 30 7 6 0 0 5 20 4 3 10 2 1 0 0 ANr ANp BNp S-CG NS-CG ANr ANp BNp S-CG NS-CG Figure 3. Percentages of women having the possible BPD (BR>84) Figure 4: Participants having possible BPD (BR>84)
  • 5. 142 INMACULADA TORRES PÉREZ, CARMEN DEL RÍO SÁNCHEZ AND MERCEDES BORDA MAS were more severe), while women with ANp had borderline To sum up, women who had some subtype of ED also had personality alterations in contrast to those in the BNp group (more MCMI-II borderline personality traits as well as possible complete disorders than traits). BPD disorder. Furthermore, the presence of disordered eating Another surprising finding contrary to the descriptions in the symptomatology in persons who have not yet developed an ED literature is the fact that restricting women (with ANr) showed might be accompanied by a greater probability of borderline possible disorder of BPD in the same proportion as those having personality traits, though this data should be taken cautiously to BNp. We believe that this finding would reflect, rather than a long- confirm it should be studied with larger samples. In addition, standing stable personality, a consequence of the diet restriction or assessment of PD using self-report measures should be interpreted of the effects of starvation, as recently Fessler (2002) suggested in with caution in acutely symptomatic patients with eating disorders his study. (Kennedy, McKey, & Katz, 1990). The MCMI-II shows moderate We found some differences in our findings compared with the convergent validity with similar self-report inventories but low Wiederman & Pryor (1997), despite using the same measurement convergent validity with structured psychiatric rating scales instrument, the MCMI-II, though they used a cutoff (BR) score of (Craig, 1999). Therefore it should be used as screening instrument >74. These researchers found significant differences as regards the together with diagnostic interviews to confirm a PD diagnostic. mean score obtained in the borderline scale between the women Therefore, it would be recommendable to add to the therapy with ANp and those with BNp (we not found among the three plans for persons with ED specific therapeutic indications for the groups with ED) and, on the other hand, they obtained percentages possible comorbid PDs, as recently have suggested Levitt (2005) of BPD higher in women with BNp (31.4%) -similar to 29% in our in the case of ED/BDP patient. And, on the other hand, consider sample-, followed by those with ANp (30.3%) -lower than 41.9% the need of introducing into prevention programs the study of in our study- and finally, those in the ANr group (18.5%) -below these personality features for the purpose of establishing the the 29% in our sample. appropriate strategies for their control. References American Psychiatric Association (1995). 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