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Table 5 Cluster t-tests of differences in HI, CI and BI between intervention and control clusters in rainy and dry seasons

From: Pupal productivity in rainy and dry seasons: findings from the impact survey of a randomised controlled trial of dengue prevention in Guerrero, Mexico

 

Rainy season

Dry season

HI

 

Intervention clusters

Control clusters

Intervention clusters

Control clusters

Mean HI

0.160

0.210

0.121

0.179

Difference in mean HI between intervention and control clusters

−0.05

−0.06

Cluster adjusted 95% CI of difference

−0.094 to −0.009

−0.102 to −0.013

t value

−2.591

−2.439

Degrees of freedom

88

88

P value

0.011

0.017

CI

 

Intervention clusters

Control clusters

Intervention clusters

Control clusters

Mean CI

0.075

0.115

0.046

0.071

Difference in mean CI between intervention and control clusters

−0.041

−0.025

Cluster adjusted 95% CI of difference

−0.062 to −0.020

−0.045 to −0.005

t value

−3.906

−1.996

Degrees of freedom

88

88

P value

0.000

0.049

BI

 

Intervention clusters

Control clusters

Intervention clusters

Control clusters

Mean BI

0.270

0.360

0.190

0.290

Proportion of households above overall mean

0.15

0.20

0.11

0.17

Difference in proportion of households above mean between intervention and control clusters

−0.05

−0.05

Cluster adjusted 95% CI of difference

−0.093 to −0.009

−0.092 to −0.011

t value

2.591

2.404

Degrees of freedom

88

88

P value

0.011

0.018

  1. HI house index, CI container index, BI Breteau index