Table 2. Cross-sectional analysis of Schistosoma haematobium infection in the 7–14-year-old schoolchildren before and after treatment.
| Variable | Baseline (95% CI) | 2 years post-treatment (95% CI) | Overall reduction in % |
|---|---|---|---|
| Prevalence in % | |||
| Overall prevalence | 55.8 (53.4–58.2) | 12.6 (10.2–15.0) | 77.4 |
| (n = 1644) | (n = 761) | ||
| By region | |||
| Boucle du Mouhoun | 58.6 (53.8–63.3) | 15.8 (11.7–20.0) | 73.0 |
| (n = 413) | (n = 297) | ||
| Nord | 61.2 (56.5–65.8) | 2.0 (0.0–4.8) | 96.7 |
| (n = 417) | (n = 99) | ||
| Sahel | 84.2 (80.7–87.7) | 30.0 (21.8–38.2) | 64.4 |
| (n = 412) | (n = 120) | ||
| Sud Ouest | 18.4 (14.6–22.2) | 4.5 (1.9–7.1) | 75.5 |
| (n = 402) | (n = 245) | ||
| By sex | |||
| Boys | 59.8 (56.7–63.0) | 16.5 (12.9–20.1) | 72.4 |
| (n = 936) | (n = 406) | ||
| Girls | 50.6 (46.9–54.2) | 8.2 (5.3–11.0) | 83.8 |
| (n = 708) | (n = 355) | ||
| Intensity of infection in e/10 ml | |||
| Overall mean | 91.3 (80.0–102.7) | 18.0 (9.4–26.6) | 80.3 |
| (n = 355) | (n = 761) | ||
| By region | |||
| Boucle du Mouhoun | 106.7 (86.0–127.5) | 37.4 (16.9–58.0) | 64.9 |
| (n = 413) | (n = 297) | ||
| Nord | 91.0 (67.3–114.6) | 0.1 (0.0–0.2) | 99.9 |
| (n = 417) | (n = 99) | ||
| Sahel | 126.9 (99.3–154.4) | 14.5 (0.0–31.2) | 88.6 |
| (n = 412) | (n = 120) | ||
| Sud Ouest | 39.4 (22.8–56.1) | 3.4 (0.0–7.3) | 91.4 |
| (n = 402) | (n = 245) | ||
| By sex | |||
| Boys | 111.8 (95.6–128.1) | 26.8 (12.3–41.3) | 76.0 |
| (n = 936) | (n = 406) | ||
| Girls | 64.2 (49.1–79.3) | 7.9 (0.0–15.8) | 87.7 |
| (n = 708) | (n = 355) | ||
CI, confidence interval; e/10 ml, number of eggs per 10 ml urine; n, sample size in the group.