Table 5 Parameters used for sample size calculation
Caracteristics | Cote d’ivoire | Burkina Faso | Niger |
|---|---|---|---|
Power | 80% | 80% | 80% |
Modern contraceptive prevalence rate | 22.4% | 28.1% | 15.1% |
Size of the expected effect in intervention groups | 15.0% | 15.0% | 15.0% |
Modern contraceptive prevalence rate (expected) | 37.4% | 43.1% | 30.1% |
Power | 80% | 80% | 80% |
Significance | 5% | 5% | 5% |
Intercluster correlation coefficient | 0.015 | 0.015 | 0.015 |
Size per cluster | 88 | 58 | 37 |
Size increased per cluster (15% increase) | 102 | 67 | 43 |
Number of clusters per group | 3 | 4 | 4 |
Final size of groups | 306 | 268 | 172 |
Final size by country | 612 | 536 | 344 |