The Afrobarometer is an independent, non-partisan research instrument that measures the social, political and economic atmosphere in Africa. Between 23 June and 6 July 2008, the Afrobarometer surveyed a nationally representative, random, stratified probability sample of 1200 adult Beninese. Face-to-face interviews were conducted by the Institute for Empirical Research in Political Economy (Institut de Recherche Empirique en Economie Politique, IREEP) in all 12 of Benin’s Départments, reaching both urban and rural areas. The sample was drawn by taking the smallest geographic units, Census Enumeration Areas (EA’s), and stratifying all EA’s across the country into separate lists according to administrative region and urban or rural status. 150 EA’s were then randomly selected from these lists with the probability proportionate to its size in the overall population as represented in the 2002 Census. This ensures that every eligible adult had an equal and known chance of being selected. Eight households were then randomly selected within each EA, and a respondent 18 years of age or older was randomly selected from each household. A gender quota ensured that every other interview must be with a female. A sample of this size is sufficient to yield an overall margin of error of +/- 3 percent at a confidence level of 95 percent.
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