Table 1 Sample size calculation, 2014
Baseline (2010) rate (%) | Expected endline rate (%) | Percentage point (pp) or change in mean z-score | Power | Intra-class correlation at baseline (2010) | Intra-class correlation at 2013 progress evaluation survey | Minimum sample size required | |
|---|---|---|---|---|---|---|---|
Stunting (24-59 m) | 55.9 | 48.9 | 7 pp | 0.8 | 0.032 | NA | 1450 |
Exclusive breast feeding (0–5.9 m) | 72.4 | 79.4 | 7 pp | 0.8 | 0.026 | 0.005 | 600 |
Minimum dietary diversity (6–23.9 m) | 6.3 | 11.3 | 5 pp | 0.8 | 0.038 | 0.125 | 900 |
Minimum total sample size required | 2950 |