Table 3.
Effect of improved water supply (intention-to-treat analysis).
| District | Paired Communities | Baseline | After Intervention | Result (Crude) | Result (Adjusted 3) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pair | Control | Intervention | Control | Intervention | Control | Intervention | PR 1 | CI 2 | PR | CI | |
| Krachi West | pair 1 | Grubi | Ntewusae | 20/76 (26.3%) | 15/75 (20.0%) | 43/76 (56.6%) | 33/75 (44.0%) | 0.88 | 0.76–1.03 | 0.81 | 0.68–0.96 |
| pair 2 | Kpollo | Kaliako | 11/19 (57.9%) | 11/17 (64.7%) | 15/19 (78.9%) | 11/17 (64.7%) | 0.92 | 0.48–1.76 | 0.90 | 0.44–1.84 | |
| pair 3 | Ankaase | Bakam | 8/16 (50.0%) | 9/17 (52.9%) | 8/16 (50.0%) | 8/17 (47.1%) | 1.00 | 0.62–1.62 | 1.00 | 0.62–1.62 | |
| pair 4 | Majimaji | Papaye | 13/22 (59.1%) | 10/20 (50.0%) | 15/22 (68.2%) | 8/20 (40.0%) | 0.66 | 0.41–1.07 | 0.64 | 0.40–1.04 | |
| pair 5 | Shitor Kope | Gyeasayor | 8/19 (42.1%) | 6/23 (26.1%) | 9/19 (47.4%) | 8/23 (34.8%) | 0.79 | 0.56–1.12 | 0.70 | 0.45–1.09 | |
| Subtotal | 60/152 (39.5%) | 51/152 (33.6%) | 90/152 (59.2%) | 68/152 (44.7%) | 0.85 | 0.74–0.97 | 0.82 | 0.71–0.96 | |||
| Krachi East | pair 6 | Tokurano Attafie | Kparekpare | 13/75 (17.3%) | 14/75 (18.7%) | 19/75 (25.3) | 22/75 (29.3) | 1.03 | 0.92–1.16 | 0.99 | 0.89–1.09 |
| pair 7 | Nwane Akura | Tsikatakope | 9/30 (30.0%) | 8/29 (27.6%) | 12/30 (40.0) | 6/29 (20.7) | 0.86 | 0.68–1.08 | 0.83 | 0.65–1.07 | |
| pair 8 | Adokwata Tornu | Okuma Akura | 6/17 (35.3%) | 4/14 (28.6%) | 6/17 (35.3) | 5/14 (35.7) | 0.95 | 0.67–1.36 | 1.00 | 0.69–1.46 | |
| pair 9 | Abongo Akura | Katafua Junction | 5/17 (29.4%) | 5/17 (29.4%) | 12/17 (70.6) | 0/17 (0.00) | 0.53 | 0.36–0.77 | 0.53 | 0.36–0.77 | |
| pair 10 | Atsigode Kope | Kwame Akura | 1/11 (9.1%) | 3/18 (16.7%) | 3/11 (27.3) | 9/18 (50.0) | 1.15 | 0.89–1.48 | 1.15 | 0.89–1.48 | |
| Subtotal | 34/150 (22.7%) | 34/153 (22.2%) | 52/150 (34.7%) | 42/153 (27.5%) | 0.96 | 0.87–1.05 | 0.95 | 0.86–1.04 | |||
| Total | 94/302 (31.1%) | 85/305 (27.9%) | 142/302 (47.0%) | 110/305 (36.1%) | 0.91 | 0.83–0.98 | 0.89 | 0.82–0.97 | |||
1 .Prevalence ratio; 2 95% confidence interval; 3 Sanitation was adjusted for in the model to remove the bias due to residual imbalance since it was not balanced even after randomization.