The document discusses different measures of fertility including total fertility rate (TFR), birth rate, and crude birth rate. It then lists factors that can influence fertility rates such as education, culture, religion, economic conditions, health issues, and government policy. These influencing factors are grouped into sociocultural and economic categories. Tables are presented comparing fertility rates and percentages of women of childbearing age by country income level and over time. Examples of sociocultural influences include religion, disease prevalence, and women's status. Economic influences discussed include costs of childrearing and type of prevailing economy.