The principal sources of information on the rapid fall in fertility in Kenya since 1980 are, first, the birth histories compiled in the Kenya Fertility Survey (KFS) of 1977-78 and the three Demographic and Health Surveys (KDHS) of 1989, 1993 and 1998, and, second, the data on children ever born and on births in the last twelve months obtained in the population censuses of 1969, 1979, 1989 and 1...