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Table 4 Comparison of mortality rates of Anopheles gambiae s.l. exposed to permethrin 0.75% alone and permethrin 0.75% + piperonyl butoxide (PBO) per site in 2013

From: Susceptibility of Anopheles gambiae to insecticides used for malaria vector control in Rwanda

Sites Permethrin 0.75% Permethrin 0.75% + PBO Chi square
Total tested Mortality (%) Total tested Mortality (%) χ2 df p
Bukora 200 84 ± 3 100 98 ± 2 9.4 1 0.02
Kibogora 100 92 ± 3 100 99 ± 1 5.9 1 0.015
Kicukiro 97 97 ± 2 100 100 3.1 1 0.08
Mareba 100 63 ± 5 100 100 58.7 1 <0.001
Mimuri 100 66 ± 5 100 98 ± 2 41.9 1 <0.001
Rukara 100 75 ± 5 100 100 32 1 <0.001