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. 2018 Aug 10;8(8):e022224. doi: 10.1136/bmjopen-2018-022224

Table 3.

Total sample size for evaluation

Evaluation activity Intervention sites Comparison sites Households per site X2 observations (baseline and endline) Total
Household survey 20 20 60 2 4800
In-depth interview* 20 20 6 2 480
Total participants for all evaluation activities 4800

*In-depth interviews (IDI) are a subset of the total household survey population selected for more in-depth information and are therefore not factored in as additional human subject participants in the total sample size for this study.