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Sample size for precise estimate at state level using a priori guess
| State | Presumed prevalence | Presumed k (the coefficient of between-cluster variation) |
Precision | Cluster size | Sample size | Number of schools |
|---|---|---|---|---|---|---|
| State 1 | 7% | 0.5 | 20% | 60 | 2693 | 45 |
| State 2 | 20% | 0.5 | 20% | 60 | 1801 | 30 |
| State 3 | 5% | 0.5 | 20% | 60 | 3241 | 54 |
| State 4 | 30% | 0.5 | 20% | 60 | 1641 | 27 |
