| Number of subjects | Baseline | Follow-up Year 1 | Follow-up Year 2 | Overall reduction |
---|---|---|---|---|---|
Prevalence | Â | Â | Â | Â | Â |
Overall prevalence (%) | 1 704 | 42.4 (40.0–44.7) | 26.8 (24.7–28.9) | 17.9 (16.1–19.7) | 57.8% |
Regions | Â | Â | Â | Â | Â |
   Albertine Nile | 638 | 33.4 (29.7–37.0) | 18.0 (15.0–21.0) | 9.7 (7.4–12.0) | 71.0% |
   Lake Albert | 335 | 49.3 (43.9–54.6) | 39.1 (33.9–44.3) | 29.6 (24.7–34.4) | 40.0% |
   Lake Victoria | 731 | 47.1 (43.4–50.7) | 28.7 (25.4–32.0) | 19.7 (16.8–22.6) | 58.0% |
Original category | Â | Â | Â | Â | Â |
   High | 620 | 77.2 (73.9–80.5) | 56.9 (53.0–60.8) | 38.5 (34.6–42.3) | 50.1% |
   Medium | 795 | 29.9 (26.7–33.1) | 12.8 (10.5–15.1) | 8.0 (6.2–9.9) | 73.2% |
   Low | 289 | 2.1 (0.4–3.7) | 0.7 (0.0–1.7) | 1.0 (0.0–2.2) | 52.4% |
Sex | Â | Â | Â | Â | Â |
   Boys | 879 | 41.5 (38.3–44.8) | 27.1 (24.1–30.0) | 18.3 (15.8–20.9) | 55.9% |
   Girls | 821 | 43.2 (39.9–46.6) | 26.4 (23.4–29.5) | 17.3 (14.7–19.9) | 60.0% |
Intensity of infection | Â | Â | Â | Â | Â |
Overall | Â | Â | Â | Â | Â |
   Mean epg | 1 704 | 219.6 (191.8–247.4) | 73.4 (58.7–88.0) | 37.4 (27.4–47.5) | 83.0% |
   0 epg (%) | - | 57.6 (55.3–60.0) | 73.2 (71.1–75.3) | 82.1 (80.3–83.9) | - |
   1–99 epg (%) | - | 16.2 (14.4–17.9) | 14.6 (12.9–16.2) | 11.5 (10.0–13.0) | - |
   100–399 epg (%) | - | 11.1 (9.6–12.6) | 7.3 (6.1–8.6) | 4.1 (3.2–5.1) | - |
   ≥ 400 epg (%) | - | 15.1 (13.4–16.8) | 4.9 (3.8–5.9) | 2.3 (1.6–3.0) | - |
Region | Â | Â | Â | Â | Â |
   Albertine Nile | 638 | 105.7 (80.6–130.8) | 44.2 (30.7–57.5) | 11.6 (6.1–17.1) | 89.0% |
   Lake Albert | 335 | 386.8 (300.3–473.3) | 165.9 (105.0–226.9) | 84.1 (47.7–120.6) | 78.3% |
   Lake Victoria | 731 | 242.3 (197.2–287.4) | 56.4 (41.0–71.8) | 38.6 (23.2–54.0) | 84.1% |
Original category | Â | Â | Â | Â | Â |
   High | 620 | 522.3 (454.6–590.0) | 175.8 (138.6–213.0) | 86.6 (63.8–109.3) | 83.4% |
   Medium | 795 | 60.2 (45.5–74.8) | 20.2 (10.5–29.8) | 12.7 (1.2–24.2) | 78.9% |
   Low | 289 | 10.1 (0.0–12.7) | 0.3 (0.0–1.0) | 0.4 (0.0–1.0) | 96.0% |
Sex | Â | Â | Â | Â | Â |
   Boys | 879 | 233.1 (190.8–275.5) | 77.8 (53.4–102.1) | 32.8 (23.2–42.4) | 85.9% |
   Girls | 821 | 205.9 (170.2–241.6) | 68.2 (52.4–84.0) | 42.5 (24.4–60.6) | 79.4% |