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Power for the main effect of 10% in the TAAG main trial as a function of the number of girls per school invited to participate and the school-level ICC.
| Girls/School Invited to Participate at Follow-up | |||||
|---|---|---|---|---|---|
| 90 | 105 | 120 | 135 | 150 | |
| Girls/School Measured at Follow-up (80% Participation) | |||||
| ICC | 72 | 84 | 96 | 108 | 120 |
| 0.010 | 81% | 85% | 87% | 89% | 90% |
| 0.003 | 92% | 95% | 97% | 98% | 98% |
| 0.000 | 96% | 98% | 99% | 99% | 100% |
