Table 3 Prevalence of S. mansoni infection at baseline and follow-up
School (no) | Baseline (N = 1,010) | Follow-up (N = 1,020) | P value | ||
|---|---|---|---|---|---|
| Â | n | % prevalence (95% CI) | n | % prevalence (95% CI) | Â |
1 | 70 | 24.3 (14.8–36.0) | 75 | 22.7 (13.7–33.7) | 0.82 |
2 | 61 | 19.7 (10.5–31.8) | 70 | 21.4 (12.5–32.9) | 0.81 |
3 | 75 | 36.0 (25.2–47.9) | 70 | 30.0 (19.6–32.9) | 0.44 |
4 | 55 | 94.5 (84.8–98.9) | 71 | 78.9 (67.5–87.6) | 0.01 |
5 | 31 | 96.8 (83.2–99.9) | 73 | 56.2 (44.0–67.8) | <0.001 |
6 | 104 | 55.8 (45.6–65.5) | 100 | 24.0 (16.0–33.5) | <0.001 |
7 | 107 | 35.5 (26.5–45.3) | 100 | 29.0 (20.3–38.9) | 0.39 |
8 | 107 | 30.0 (21.4–39.5) | 92 | 20.7 (12.9–30.4) | 0.13 |
9 | 82 | 34.2 (24.0–45.4) | 71 | 38.0 (26.8–50.3) | 0.63 |
10 | 104 | 19.2 (12.1–28.1) | 101 | 30.7 (21.8–40.7) | 0.06 |
11 | 110 | 21.0 (13.7–29.7) | 98 | 30.6 (21.6–40.7) | 0.11 |
12 | 104 | 16.3 (9.80–24.8) | 99 | 22.2 (14.4–31.7) | 0.29 |
Total | 1,010 | 35.0 (25.4–37.9) | 1,020 | 32.6 (29.6–35.5) | 0.25 |