PSC African Demography Working Paper Series

Document Type

Working Paper

Date of this Version

June 1984


African Demography Working Papers Working Paper No. 11 June 1984


The data collected by the Bandafassi demographic study in Eastern Senegal, a small-scale intensive and experimental follow-up survey on a population of about 7,000 inhabitants in 1983, were analyzed to derive an estimation of the life table. The use of the multi-round survey technique, combined with anthropological methods to estimate the ages or collect genealogies, results in unusually reliable data. Taking into account the uncertainty of the estimates related to the small size of the population, the measures of mortality show a high mortality level, with life-expectancy at birth close to 31 years; a pattern of infant and child mortality close to what has been observed in other rural areas of Senegal; a seasonal pattern in child mortality with two high risk periods, the rainy season and the end of the dry season; an adult mortality pattern similar to what is described in model life tables for developed countries; no significant differences according to sex or ethnic group. The example of the Bandafassi population study and of a few similar studies, suggests that one possible way to improve demographic estimates in countries where vital registration systems are defective would be to set up a sample of population laboratories where intensive methods of data collection would continue for extended periods.


Africa, Senegal, Bandafassi, Bandafassi Demographic Study, Eastern Senegal, population survey, demographic surveys, data, multi-round survey, mortality, measures of mortality, life table, seasonal patterns, child mortality, infant mortality, mortality, life-expectancy at birth, adult mortality, ethnic groups, mortality patterns, vital statistics, vital registration, Kendougou, climate, environmental conditions, weather, public health, Bedik, Niokholonko, Fula Bande, census, age survey, genealogical survey, genealogy, age, fertility survey, fertility, misreporting, sex, age, population, seasonality, infectious diseases, public health, measles, Sub-Saharan Africa



Date Posted: 20 November 2007

This document has been peer reviewed.