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

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

Treatment	Total dead mosquitoes	Total mosquitoes recaptured	Crude mortality		OR [95% CI]	Corrected mortality^⌘		z value	p value
Treatment	Total dead mosquitoes	Total mosquitoes recaptured	Mean proportion	[95% CI]	OR [95% CI]	Mean proportion	[95% CI]	z value	p value
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

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.

ISSN: 1475-2875