Sample size considerations
| PrEP arm | ITx arm | ||||
|---|---|---|---|---|---|
| Retention at 12 months (%) | Precision (%) | Number | Retention at 12 months (%) | Precision (%) | Number |
| 65 | 2.5 | 1398 | 75 | 2.5 | 1152 |
| 65 | 5.0 | 350 | 75 | 5.0 | 288 |
| 65 | 7.5 | 155 | 75 | 7.5 | 128 |
| 65 | 10.0 | 87 | 75 | 10.0 | 72 |
Numbers in bold are the numbers taken to develop the sample size.
ITx, immediate treatment; mo, months; N, number; PrEP, pre-exposure prophylaxis.