Table 1. Characteristics of children enrolled in the re-infection cohort.
| Follow-up round 1 (N = 253) |
Follow-up round 2 (N = 125) |
|||||
|---|---|---|---|---|---|---|
| Total | Infected n(%) | (95% CI) | Total | Infected n(%) | (95% CI) | |
| Overall | 253 | 61 (24.1) | (19.0–29.9) | 125 | 24 (19.2) | (12.7–27.2) |
| Gender | ||||||
| Female | 86 | 16 (18.6) | (11.0–28.4) | 33 | 5 (15.2) | (5.1–31.9) |
| Male | 167 | 45 (27.0) | (20.4–34.3) | 92 | 19 (20.7 | (12.9–30.4) |
| Age group | ||||||
| ≤10 | 41 | 13 (31.7) | (18.1–48.1) | 28 | 7 (25.0) | (10.7–44.9) |
| 11 | 71 | 15 (21.1) | (12.3–32.4) | 34 | 5 (14.7) | (5.0–31.1) |
| 12 | 74 | 18 (24.3) | (15.1–35.7) | 29 | 6 (20.7) | (8.0–39.7) |
| ≥13 | 67 | 15 (22.4) | (13.1–34.2) | 34 | 6 (17.6) | (6.8–34.5) |
| Community piped water coverage (%) | ||||||
| <70 | 58 | 17 (29.3) | (18.1–42.7) | 31 | 5 (16.1) | (5.5–33.7) |
| 70 - < 90 | 66 | 13 (19.7) | (10.9–31.3) | 28 | 8 (28.6) | (13.2–48.7) |
| ≥90 | 129 | 31 (24.0) | (16.9–32.3) | 66 | 11 (16.6) | (8.6–27.9) |
| Altitude class (meters) | ||||||
| <50 | 17 | 5 (29.4) | (10.3–56.0) | 14 | 6 (42.9) | (17.7–71.1) |
| 50–100 | 140 | 31 (22.1) | (15.6–29.9) | 62 | 11 (17.7) | (9.2–29.5) |
| 100–150 | 84 | 21 (25.0) | (16.2–35.6) | 42 | 5 (11.9) | (4.0–25.6) |
| 150–200 | 7 | 2 (28.6) | (3.7–71.0) | 3 | 0 (0) | (0–70.8) |
| ≥200 | 5 | 2 (40.0) | (5.3–85.3) | 4 | 2 (50.0) | (6.8–93.2) |
| Distance water body class | ||||||
| <1 km | 92 | 20 (21.7) | (13.8–31.6) | 46 | 11 (23.9) | (12.6–38.8) |
| 1–2 km | 98 | 25 (25.5) | (17.2–35.3) | 42 | 8 (19.1) | (8.6–34.1) |
| 2–3 km | 46 | 13 (28.3) | (16.0–43.5) | 26 | 5 (19.2) | (6.6–39.4) |
| >3 km | 17 | 3 (17.7) | (3.8–43.4) | 11 | 0 (0) | (0–28.5) |
| School grade | ||||||
| Grade 5 | 144 | 37 (25.7) | (18.8–33.6) | 74 | 13 (17.6) | (9.7–28.2) |
| Grade 6 | 109 | 24 (22.0) | (14.6–31.0) | 51 | 11 (21.6) | (11.3–35.3) |
| Toilet | ||||||
| No Toilet | 47 | 13 (27.7) | (15.6–42.6) | 23 | 1 (4.3) | (0.1–21.9) |
| Toilet | 206 | 48 (23.3) | (17.7–29.7) | 102 | 23 (22.6) | (14.9–31.9) |
| Land cover classification | ||||||
| Closed shrubland | 145 | 35 (24.1) | (17.4–31.9) | 65 | 12 (18.5) | (9.9–30.0) |
| Open shrubland | 59 | 14 (23.7) | (13.6–36.6) | 34 | 6 (17.7) | (6.8–34.5) |
| Sparse shrubland | 41 | 11 (26.8) | (14.2–42.9) | 19 | 6 (31.6) | (12.6–56.6) |
| Thickett | 8 | 1 (12.50) | (0.3–52.7) | 7 | 0 (0) | (0–41.0) |
| Baseline intensity of infection | ||||||
| Light infection | 105 | 35 (33.3) | (24.4–43.2) | 50 | 12 (24.0) | (13.1–38.2) |
| Heavy infection | 148 | 26 (17.6) | (11.8–24.7) | 75 | 12 (16.0) | (8.6–26.3) |
| Sample size (N) | 253 | 125 | ||||