Quasi-experimental design means that we have both intervention and comparison groups – this permits determining what would have happened in the absence of the program in the comparison groups. Longitudinal study means that the same women will be followed over time (at two-year and four-year follow-up). This means we have to collect identifiers for these women including phone numbers, locations, names of friends and relatives who could help find them at the follow-up period if the woman or household has moved.