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Table 3 % Mortality of Anopheles gambiae in WHO tube tests with permethrin (0.75%), either with or without a 60 min pre-exposure to piperonyl butoxide (5%) treated filter papers

From: Nationwide insecticide resistance status and biting behaviour of malaria vector species in the Democratic Republic of Congo

Sentinel site Province Permethrin 0.75% PBO 5%, Permethrin 0.75% Mean difference in mortality P value
Kabondo Tshopo 62 (53–72) 86 (79–93) 24 < 0.001
Lodja Sankuru 79 (71–87) 100 21 < 0.001
Kingasani Kinshasa 92 (87–97) 99 (97–99) 7 0.017
Mikalayi Lulua 30 (21–39) 100 70 < 0.001
Kalemie Tanganyika 94 (89–99) 96 (92–99) 2 0.516
Kapolowe Haut Katanga 53 (43–63) 100 47 < 0.001
Katana Sud Kivu 99 (97–99) 100 1 0.316
Mean   73 (70–76) 97 (96–98) 24 < 0.001