Between 19 May and 4 June 2008, the Afrobarometer surveyed a nationally representative, random, stratified probability sample of 1200 adult Senegalese. Face-to-face interviews were conducted by GERCOP l’ENEA at L’Universit Gaston Berger de Saint Louis in all 11 of Senegal’s Regions and all 35 Departments, 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.
Related content
