Group | 1999 rates (n) | 2001 rates (n) | Δ rate | Δ rate, 95% CI |
---|---|---|---|---|
n = denominator population. | ||||
10 days | ||||
Intervention | 37.6 (2911) | 39.5 (3001) | +1.9 | −0.6 to 4.4 |
Area A | 38.0 (2263) | 36.9 (2423) | −1.1 | −3.8 to 1.7 |
Area B | 30.4 (3277) | 30.6 (3568) | +0.2 | −2.0 to 2.4 |
A+B | 33.5 (5540) | 33.1 (5991) | −0.4 | −2.1 to 1.4 |
6 weeks | ||||
Intervention | 25.1 (2836) | 28.2 (2768) | +3.1 | 0.8 to 5.5 |
Area A | 26.4 (2316) | 26.6 (2277) | +0.2 | −2.4 to 2.7 |
Area B | 19.8 (3110) | 21.1 (3206) | +1.3 | −0.7 to 3.3 |
A+B | 22.6 (5426) | 23.4 (5483) | +0.8 | −0.8 to 2.3 |