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Calculation of sample size and determination of sampling strategy per study site.
| Study Site | Number of Monthly Male Clinic Attendees Per Month | Calculated Sample Size for Study Site (Probability Proportionate to Size) | Systematic Random Sampling Strategy |
|---|---|---|---|
| 1 | 400 | (400/900 × 384) 170 | (900/400) every 2nd person |
| 2 | 300 | (300/900 × 384) 128 | (900/300) every 3rd person |
| 3 | 200 | (200/900 × 384) 86 | (900/200) every 5th person |
| Totals | 900 | 384 |
