Table 4.
Prevalence and intensity summary statistics for first-year students at baseline and final evaluation by arm
| 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 | 503/1,047 | 48.04 (31.76–64.32) | 120/800 | 15.00 (7.51–22.49) |
| Arm 2 | 134/657 | 20.40 (11.89–28.90) | 103/726 | 14.19 (6.68–21.70) | |
| Arm 3 | 167/629 | 26.55 (17.70–35.40) | 119/743 | 16.02 (7.76–24.27) | |
| Arm 4 | 256/742 | 34.50 (23.18–45.82) | 153/687 | 22.27 (12.88–31.66) | |
| Arm 5 | 224/668 | 33.53 (23.11–43.95) | 141/806 | 17.49 (10.13–24.86) | |
| Arm 6 | 401/982 | 40.84 (24.46–57.21) | 192/979 | 19.61 (9.30–29.92) | |
| Prevalence of heavy intensity infections (village mean % eggs per gram feces ≥ 400, CI) | Arm 1 | 69/1,047 | 6.59 (2.42–10.76) | 28/800 | 3.50 (0.58–6.42) |
| Arm 2 | 18/657 | 2.74 (0.00–5.50) | 13/726 | 1.79 (0.00–3.76) | |
| Arm 3 | 23/629 | 3.66 (1.48–5.83) | 19/743 | 2.56 (0.55–4.56) | |
| Arm 4 | 40/742 | 5.39 (1.15–9.63) | 17/687 | 2.47 (0.74–4.21) | |
| Arm 5 | 30/668 | 4.49 (0.61–8.37) | 16/806 | 1.99 (0.99–2.98) | |
| Arm 6 | 73/982 | 7.43 (1.54–13.33) | 25/979 | 2.55 (0.00–5.52) | |
| Village intensity (mean all participants, CI) | Arm 1 | 1,047 | 90.29 (43.38–137.20) | 800 | 37.91 (8.52–67.29) |
| Arm 2 | 657 | 35.27 (5.27–65.27) | 726 | 32.63 (0.00–67.60) | |
| Arm 3 | 629 | 47.01 (22.80–71.22) | 743 | 52.81 (0.00–112.69) | |
| Arm 4 | 742 | 67.71 (22.05–113.38) | 687 | 35.09 (16.50–53.68) | |
| Arm 5 | 668 | 64.83 (25.32–104.34) | 806 | 31.00 (16.06–45.94) | |
| Arm 6 | 982 | 83.76 (25.62–141.89) | 979 | 50.87 (0.00–105.94) | |
Each arm consists of 25 villages.