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Table 1 The probit knockdown time (KDT50 and KDT95) values and percentage mortality of Aedes aegypti to DDT, permethrin, and PBO synergist in Lagos State

From: Metabolic resistance mechanism in Aedes aegypti from Lagos State, Nigeria

Location Number exposed KDT50 (95% cl) KDT95 (95% cl) Mortality (%) P value
Kosofe
 DDT 100 116.7(88.9–188.1) 552.2(300–1672.3) 26 0.000
 PBO + DDT 100 54.8 (48.4–56.2) 257.4 (182.4–425.9) 75
 PER 100 113.6(86.7–181.1) 599.3(321.1–1826.3) 29 0.000
 PBO + PER 100 50.1 (43.4–60.7) 369.3(233.6–747.2) 78
Alimosho
 DDT 100 91.8(62.7–284.4) 444(181.3–8502.7) 46 0.000
 PBO + DDT 100 86.7(71.1–117.6) 416.3(256.1–918.2) 91
 PER 100 46.3(41.5–61) 222.4(162.1–350) 62 0.004
 PBO + PER 100 15.5(14.1–24.5) 86.7(58.1–204.2) 99
Ibeju-Lekki
 DDT 100 150.1(103.5–307.3) 965.1(424.3–4938.2) 20 0.000
 PBO + DDT 100 50.7(50.3–58.4) 218.3(161.2–336.6) 76
 PER 100 45(40–51.6) 226.6(179.5–407.5) 70 0.03
 PBO + PER 100 32.3(25.3–427) 108.9(70.3–303.7) 99
Badagry
 DDT 100 118.4(87.5–200.7) 848.3(409–3182.6) 26 0.000
 PBO + DDT 100 28.1(26.5–29.7) 61.6(56–69.2) 100
 PER 100 48(41.8–57.9) 145.5(104.8–257.2) 65 0.03
 PBO + PER 100 28.1(26.5–29.7) 61.6(58–69.2) 92
  1. Mortality of > 98% indicates susceptibility, 97–90 suspected resistance and < 90% resistant (WHO, 2016); S susceptible, SR suspected resistance, R resistant
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