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Table 1 Knock-down times for 50 and 95 % of the Kisumu susceptible strain and the Pitoa Anopheles gambiae s.l. population to DDT, permethrin and deltamethrin diagnostic concentrations

From: When intensity of deltamethrin resistance in Anopheles gambiae s.l. leads to loss of Long Lasting Insecticidal Nets bio-efficacy: a case study in north Cameroon

Diagnostic concentrations Kisumu strain Pitoa popualtion
N kdT50[CI] (min) kdT95[CI] (min) Mortality (%) N kdT50[CI] (min) kdT95[CI] (min) KDT50R Mortality (%)
4 % DDT 80 19.8 [17.5–21.3] 31.2 [28.5–33.1] 100 85 40.3 [38.1–43.1] >60 2.0 76.5
0.05 % Deltamethrin 91 10.1 [8.2–12.8] 22.2 [20.1–24.9] 100 110 19.6 [17.9–21.3] 37.6 [33.2–39.5] 1.9 59.1
0.75 % Permethrin 87 9.1 [7.5–11.5] 21.4 [19.2–23.3] 100 99 21.9 [18.7–23.5] 45.3 [39.8–48.5] 2.4 72.7
  1. N Sample size, CI confidence interval at 95 %, kdT 50 Knock-down times for 50 % of exposed mosquitoes, KDT 95 Knock-down times for 95 % of exposed mosquitoes, KDT 50 R Ratio KDT50Pitoa/KDT50 Kisumu, min time in minutes