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Table 5 The proportion of the mortality of mosquitoes 24 hours after collection from experimental huts

From: An experimental hut study to quantify the effect of DDT and airborne pyrethroids on entomological parameters of malaria transmission

Treatment Total dead mosquitoes Total mosquitoes recaptured Crude mortality OR [95% CI] Corrected mortality z value p value
Mean proportion [95% CI] Mean proportion [95% CI]
Control 193 1067 0.17 [0.13 - 0.22] 1.00 [0.00 – 2.00] 0.00 [0.00 - 0.00] -10.04 NA
DDT 836 1185 0.70 [0.65 - 0.74] 9.68 [4.19 – 21.00] 0.64 [0.60 - 0.67] 22.49 <0.001
Metofluthrin coils 763 1157 0.67 [0.63 - 0.72] 8.77 [2.34 – 17.79] 0.61 [0.57 - 0.64] 21.96 <0.001
Transfluthrin coils 727 1067 0.72 [0.68 - 0.76] 10.85 [1.53 – 21.01] 0.66 [0.63 - 0.70] 23.32 <0.001
  1. Legend: Experiments were conducted in experimental huts within a semi field system. Mortality of mosquitoes is compared between huts that had mosquito coils, DDT and no insecticide. Experiments were conducted for 16 nights. CI – Confidence intervals. - Corrected using Abbott’s formula; OR – Odds ratios of the proportion of mosquitoes.