Table 4.
End-of-season prevalence of infection in study villages where at least one clinical case was reported
| Outcome | Intervention | Control | Odds ratio (95% confidence interval) |
|---|---|---|---|
| Infection prevalence | |||
| 2018 (all clusters) | 0.9% (14/1629) | 1.4% (20/1399) | 0.51 (0.18, 1.41), p = 0.194 |
| North bank | 0.2% (2/952) | 0.1% (1/726) | 1.64 (0.14, 18.1), p = 0.688 |
| South bank | 1.8% (12/677) | 2.8% (19/673) | 0.61 (0.29, 1.26), p = 0.182 |
| 2017 | 1.2% (12/975) | 2.4% (32/1322) | 0.51 (0.25, 1.05) p = 0.07 |
| Combined both seasons | 1.0% (26/2604) | 1.9% (52/2721) | 0.51 (0.3, 0.86) p = 0.013 |
| By age | |||
| Under 5 years | 0.5% (2/368) | 3.9% (15/382) | 0.12 (0.02, 0.58), p = 0.009 |
| 5–14 years | 0.8% (8/1072) | 1.2% (14/1140) | 0.59 (0.21, 1.64), p = 0.311 |
| 15–30 years | 1.9% (8/428) | 2.5% (10/403) | 0.71 (0.24, 2.1), p = 0.532 |
| Above 30 years | 1.1% (8/736) | 1.6% (13/795) | 0.61 (0.22, 1.75), p = 0.361 |