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Table 2 Knockdown time in minutes for An. gambiae s.l. wild population against different insecticides in susceptibility test using WHO kits

From: Bio-efficacy of deltamethrin based durable wall lining against wild populations of Anopheles gambiae s.l. in Northern Tanzania

Insecticide Knock down time in minutes (95% CI) Goodness of fit test
KDT50 KDT90 KDT95 χ2 P value
Permethrin 0.75% 25.0 (17.0–31.9) 62.6 (50.5–83.4) 81.2 (64.0–117.6) 1101.8 <0.001
Deltamethrin 0.05% 23.7 (19.1–28.4) 63.5 (49.3–98.2) 83.9 (61.7–146.1) 1874.9 <0.001
DDT 4% 13.5 (8.92–17.77) 71.2 (66.11–79.21) 92.33 (85.44–99.39) 941.55 <0.011