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

Table 8 Insecticide induced blood-feeding inhibition of mosquitoes in experimental huts

Treatment	Proportion of unfed mosquitoes^a	OR [95% CI]	Mean proportion	[95% CI]	z value	p value
Control	321/1120	1.00 [0.00 – 2.00]	0.15	[0.10 - 0.22]	-7.49	NA
DDT	881/1047	13.21 [9.96 – 29.04]	0.77	[0.73 - 0.81]	24.10	<0.001
Transfluthrin coils	1164/1184	144.87 [67.19 – 382.05]	0.98	[0.96 - 0.99]	22.03	<0.001
Metofluthrin coils	1085/1146	44.27 [37.03 – 110.97]	0.93	[0.90 – 0.95]	25.57	<0.001

Legend: The proportion of mosquitos that were inhibited from blood feeding on humans was measured inside experimental huts in a semi field system for 16 nights. The proportion of unfed mosquitoes was compared between mosquito coils, DDT and no insecticide.
^aunfed mosquitoes/total number of mosquitoes recaptured from the hut; OR – Odds ratios of the proportion of mosquitoes that are likely not to feed; CI – Confidence intervals.