This volume organizes the findings of the World Fertility Survey (WFS) on fertility levels in Kenya, Ghana, Lesotho, Benin, the Ivory Coast, Cameroon, and the Northern Sudan covering 1978 to 1981. The investigation sought to identify those factors determining fertility levels such as patterns of starting, spacing, and stopping childbearing. The start of childbearing is evaluated through the age of 1st birth, menarche and 1st marriage, the proportion of the population with premarital births, and contraceptive use by childless women. The examination of spacing patterns is by duration of breast feeding, lactational amenorrhea, postpartum abstinence, periods of nonsusceptibilty to pregnancy, and the proportion of contraceptive users among currently married and exposed women. Fertility determiniants to study spacing include estimated mean ages of the beginning of infecundity, menopause, absence of births within the past 5 years, and a combination of these. The data is presented as a comparative analysis, variable by variable, on both a national and country level. For each country, the data is addressed in terms of residence, ethnicity, literacy, partner's literacy, educational status of the woman and her partner, religion, religion of residence, and work status since marriage. Data is further analysed according to the age groups 15-24, 25-34, and 34-59 years. The methods used for this study are discussed briefly but a more detailed explanation can be found in Ferry and Page, WFS Illustrative Analysis for Kenya (1984).