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

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听months

听	Intervention	Control	Significance of difference
Households with dengue cases	6.1% (326/5349)	7.9% (407/5141)	p听=听0.09¹
Dengue case rate in trial populations	19.8/1000	27.1/1000	听
Mean number of work/school days lost by the dengue patients	9.1 (SD 7.88)	8.4 (SD 7.31)	p听=听0.22²
Days lost by dengue cases /1000 population	180.18	227.64	听
Mean number of work/school days lost by caregivers of dengue patients	9.08 (SD 8.13)	8.26 (SD 7.46)	p听=听0.12²
Days lost by caregivers /1000 population	179.78	223.85	听

¹Cluster t-test. Mean difference听鈭捥�0.018, 95% CIca 鈭�0.040 - 0.004, t听=听鈭�1.685,df听=听88
²Unpaired t-test
Extrapolation of days saved by the intervention:
Saving in days lost by sick people per thousand population听=听227.64鈥�180.18听=听47.46 /1000
Saving in days lost by caregivers per thousand population听=听223.85鈥�179.78听=听44.07 /1000
Total savings in days lost per thousand population听=听47.46听+听44.07听=听91.53 /1000听=听0.09153

ISSN: 1471-2458