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| Outcome | Power | Two‐sided significance level | ICC | MD | SD | Sample size (total) |
| WAZa | 80% | 95% | 0.05 | 0.26 | 1.0 | 390 (30 clusters with 13 individuals) |
Abbreviations: ICC: intracluster correlation; MD: mean difference; SD: standard deviation; WAZ: weight‐for‐age z‐score
aThis example is based on the expected effect size of nutrition education on WAZ, in food insecure populations, as reported by Bhutta 2013.
