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. 2020 May 13;6(5):e03829. doi: 10.1016/j.heliyon.2020.e03829

Table 2.

Effective sample size by FEMI category, and number of survey sites (“clusters”) for the Demographic and Health Surveys (DHS) in Nigeria, by survey year. Categories that were not included in a survey year are marked with “-”.

Category Survey Year
1990 1999 2003 2008 2013
Violence against Women 7079 6081 7473 32825 38551
Employment - 8166 7613 33326 38913
Education 8767 8180 7620 33383 38945
Reproductive Healthcare 4873 3067 3767 17995 20192
Decision Making - - 7374 23880 27210
Access to Contraception 1987 2135 2686 12220 14687
Number of Sites 299 399 365 888 904