Enquête démographique et de santé au Bénin 2001. Demographic and Health Surveys. Calverton, Maryland, USA: Institut National de la Statistique et de l'Analyse Economique et ORC Macro, 2002 Unweighted sample size is less than 25, point estimate, lower limit and upper limit have been suppressed; Unweighted sample size is less than 25, point estimate, lower limit and upper limit have been suppressed