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Individual fertility rate among minor tribal populations from Andhra Pradesh, India.

The Individual Fertility Rate (IFR), a measure of current fertility status in small and illiterate preindustrial societies, is estimated for five tribal populations from Andhra Pradesh, India. The Andhra tribes exhibit high individual fertility rates ranging between 49.62 +/- 1.76 (Konda Dora) and 66.63 +/- 3.16 (Manzai Mali) and fall in the high-fertility category. The differences in IFR values between affinal and consanguineous couples are not significant. A direct positive relation between IFR and tribal hierarchy is observed with relatively higher IFR values recorded for socially higher-ranked tribes in an ascending order from lower- to higher-ranked groups.