Table 1.
Prevalence and intensity summary statistics for 9- to 12-year-olds by arm at baseline and final evaluation
| Year 1 | Year 5 | ||||
|---|---|---|---|---|---|
| Variable | Arm | n/N or N | % (CI), mean (CI), or median (range) | n/N or N | % (CI), mean (CI), or median (range) |
| Village prevalence (mean % infected, CI) | Arm 1 | 1,176/1794 | 65.55 (56.02–75.09) | 775/2,294 | 33.78 (21.72–45.83) |
| Arm 2 | 1,113/1951 | 57.05 (49.35–64.75) | 456/2,274 | 20.05 (10.23–29.88) | |
| Arm 3 | 1,233/2035 | 60.59 (51.35–69.83) | 775/2,344 | 33.06 (23.57–42.55) | |
| Arm 4 | 1,193/1822 | 65.48 (55.73–75.23) | 595/2,165 | 27.48 (17.05–37.92) | |
| Arm 5 | 1,274/1927 | 66.11 (57.66–74.56) | 820/2,345 | 34.97 (25.06–44.87) | |
| Arm 6 | 1,251/2012 | 62.18 (53.20–71.15) | 841/2,385 | 35.26 (24.94–45.58) | |
| Prevalence of heavy intensity infections (village mean % eggs per gram feces ≥ 400, CI) | Arm 1 | 149/1794 | 8.31 (4.15–12.46) | 73/2,294 | 3.18 (0.00–6.47) |
| Arm 2 | 114/1951 | 5.84 (1.47–10.22) | 24/2,274 | 1.06 (0.00–2.49) | |
| Arm 3 | 144/2035 | 7.08 (3.51–10.64) | 53/2,344 | 2.26 (1.08–3.44) | |
| Arm 4 | 150/1822 | 8.23 (3.62–12.85) | 35/2,165 | 1.62 (0.55–2.69) | |
| Arm 5 | 160/1927 | 8.30 (2.69–13.92) | 65/2,345 | 2.77 (0.11–5.43) | |
| Arm 6 | 154/2012 | 7.65 (2.90–12.41) | 62/2,385 | 2.60 (0.00–5.53) | |
| Village intensity (mean all participants, CI) | Arm 1 | 1,794 | 104.67 (65.00–144.34) | 2,294 | 47.77 (11.34–84.20) |
| Arm 2 | 1,951 | 74.34 (36.91–111.78) | 2,274 | 19.15 (0.00–38.85) | |
| Arm 3 | 2,035 | 91.65 (59.80–123.49) | 2,344 | 39.14 (20.63–57.64) | |
| Arm 4 | 1,822 | 100.76 (59.39–142.12) | 2,165 | 30.16 (12.98–47.33) | |
| Arm 5 | 1,927 | 97.89 (47.94–147.84) | 2,345 | 45.95 (11.81–80.09) | |
| Arm 6 | 2,012 | 153.95 (102.27–205.64) | 2,385 | 45.10 (8.60–81.60) | |
Each arm consists of 25 villages.