Table 2 Minimum detectable effect size estimates and summary of parameters used in sample size calculations for the main study outcomesa
Women’s dietary MPA | Children’s dietary MPA (3–5 years) | Children DD (6–24 months) (n. of food groups) | Household poultry production | Household poultry sales | |
|---|---|---|---|---|---|
Communes (n per intervention arm) | 15 | 15 | 30 | 30 | 30 |
Villages (n per intervention arm) | 30 | 30 | 60 | 60 | 60 |
Individuals per village (n) | 12 | 12 | 8.8 | 15 | 15 |
Intra-cluster correlation (level 3) | 0.002 | 0.002 | 0.001 | 0.001 | 0.001 |
Intra-cluster correlation (level 2) | 0.05 | 0.04 | 0.05 | 0.06 | 0.01 |
Sample size (per intervention arm) | 360 | 360 | 526 | 900 | 900 |
Estimated baseline levels | 0.26 | 0.43 | 3.95 | 11 | 1 |
Standard deviation (baseline) | 0.22 | 0.31 | 0.97 | 11 | 3 |
Minimum detectable effect size (SD) | 0.28 | 0.27 | 0.21 | 0.18 | 0.15 |
Minimum detectable effect size (eq. levels) | 0.06 | 0.08 | 0.20 | 1.98 | 0.45 |