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Table 4 Proportion of households with dengue cases, rate of dengue occurrence and mean number of work/school days lost in intervention and control clusters in last 12 months

From: Household costs of dengue illness: secondary outcomes from a randomised controlled trial of dengue prevention in Guerrero state, Mexico

  Intervention Control Significance of difference
Households with dengue cases 6.1% (326/5349) 7.9% (407/5141) p = 0.091
Dengue case rate in trial populations 19.8/1000 27.1/1000  
Mean number of work/school days lost by the dengue patients 9.1 (SD 7.88) 8.4 (SD 7.31) p = 0.222
Days lost by dengue cases /1000 population 180.18 227.64  
Mean number of work/school days lost by caregivers of dengue patients 9.08 (SD 8.13) 8.26 (SD 7.46) p = 0.122
Days lost by caregivers /1000 population 179.78 223.85  
  1. 1Cluster t-test. Mean difference − 0.018, 95% CIca −0.040 - 0.004, t = −1.685,df = 88
  2. 2Unpaired t-test
  3. Extrapolation of days saved by the intervention:
  4. Saving in days lost by sick people per thousand population = 227.64–180.18 = 47.46 /1000
  5. Saving in days lost by caregivers per thousand population = 223.85–179.78 = 44.07 /1000
  6. Total savings in days lost per thousand population = 47.46 + 44.07 = 91.53 /1000 = 0.09153