From December 3-17, 2012, the Afrobarometer surveyed a nationally representative, random, stratified probability sample of 1,200 adult burkinabe. Face-to-face interviews were conducted in the language of the respondent’s choice by the Afrobarometer team based at CGD. Local language translations were done in 3 languages: Dioula, Fulfuldé, Mooré. IREEP provided technical backstopping for the survey. One previous Afrobarometer survey was conducted in Burkina Faso in 2008.
The sample was drawn by taking the smallest geographic units, Census Enumeration Areas (EAs), and stratifying all EAs across the country into separate lists according to regions and geographical area (urban/rural). 150 EAs were then randomly selected from these lists with the probability proportionate to its size in the overall population as represented in 2012 population projections provided by the Institute National de la Statistique et de la Démographie (INSD) based on the 2006 RGPH. 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.