Table 3 Pupa positive households with regular and irregular water supply, in intervention and control sites, Managua, January 2013
Water supply | Intervention sites | Control sites | Impact of intervention* OR (95% CI of OR); NNT (95% CI of NNT) | ||
|---|---|---|---|---|---|
No. households | No. (%) positive for pupae | No. households | No. (%) positive for pupae | ||
Regular supply | 2028 | 76 (4) | 2031 | 135 (7) | 0.5 (0.3鈥�0.8); 30 (18鈥�83) |
Irregular supply | 2015 | 148 (7) | 2016 | 248 (12) | 0.5 (0.3鈥�0.9); 22 (12鈥�77) |
Association with regularity of water supply: OR (95% CI of OR); NNT (95% CI of NNT) | |||||
All sites | Intervention sites | Control sites | 听 | ||
0.6 (0.5鈥�0.8); 40 (28鈥�84) | 0.6 (0.4鈥�0.8); 46 (26鈥�134) | 0.7 (0.5鈥�0.9); 32 (19鈥�85) | 听 | ||