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Table 3 Proportion of households that purchased anti-mosquito products, and expenditure during the last month among those who purchased the products, in trial intervention and control sites surveyed in August–November 2012

From: Household costs for personal protection against mosquitoes: secondary outcomes from a randomised controlled trial of dengue prevention in Guerrero state, Mexico

 

Intervention clusters

Control clusters

Difference of proportions (95%CIca)

Surveyed households

5349

5142

 

Proportion of households that purchased anti-mosquito productsa

47.8% (2530/5293)

53.3% (2707/5079)

−0.05 (−0.1 to −0.01)

Among households spending anything

 Mean expenditure in the last month (USD)

6.0 (SD 5.9)

6.83 (SD 6.84)

 

Proportion spending more than the mean of USD 6.43b

30.4% (768/2530)

36.7% (993/2707)

−0.06 (−0.12 to −0.01)

Among all households

 Mean expenditure in the last month (USD)

2.86 (SD 5.12)

3.65 (SD 6.04)

 

Proportion spending more than the mean of USD 3.25c

30.6% (1622/5293)

37.5% (1906/5079)

−0.07 (−0.09 to −0.05)

  1. aCluster t-test. t = −2.193, df 88 p = 0.031
  2. bCluster t-test. t = −1.978, df 88, p = 0.05
  3. cCluster t-test. t = −2.653, df 88, p = 0.009