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Table 2 House Index in households with regular and irregular water supply, in intervention and control sites, Managua, January 2013

From: Informed community mobilization for dengue prevention in households with and without a regular water supply: Secondary analysis from the Camino Verde trial in Nicaragua

Water supply

Intervention sites

Control sites

Impact of intervention

OR (95% CI of OR); NNT (95% CI of NNT)a

No. households

No. (%) positive for larvae/pupae

No. households

No. (%) positive for larvae/pupae

Regular supply

2028

243 (12)

2031

396 (20)

0.7 (0.5–1.0); 24 (12–251)

Irregular supply

2015

322 (16)

2016

572 (28)

0.6 (0.4–0.8); 11 (7–36)

Association with regularity of water supply: OR (95% CI of OR); NNT (95% CI of NNT)a

All sites

Intervention sites

Control sites

 

0.7 (0.6–0.8); 19 (13–35)

0.7 (0.6–0.9); 29 (16–103)

0.6 (0.5–0.8); 14 (9–24)

 
  1. aOdds Ratio and 95% confidence interval; number needed to treat and 95% confidence interval. Both OR and NNT from GLMM, with cluster as random effect. In addition to regularity of water supply or intervention status, observed presence of temephos remained in the final models