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Table 2 Logistic regression analysis to compare mosquito mortality in Interceptor® and Interceptor® G2 ITNs after exposure in WHO cone and tunnel tests, Ifakara ambient chamber test and experimental hut, Tanzania

From: Influence of testing modality on bioefficacy for the evaluation of Interceptor® G2 mosquito nets to combat malaria mosquitoes in Tanzania

  WHO cone Tunnel I-ACT Hut Huts with netting window
OR (95% CI) OR (95% CI) OR (95% CI) OR (95% CI) OR (95% CI)
Anopheles arabiensis (resistant)
 Overall      
  Interceptor® 1 1 1 1 1
  Interceptor®G2 0.04 (0.03, 0.07) 1.33 (1.17, 1.51) 1.55 (1.16, 2.07) 2.38 (2.09,2.72) 2.43 (1.88, 3.14)
 Unwashed      
  Interceptor® 1 1 1 1 1
  Interceptor®G2 0.05 (0.20, 0.09) 1.42 (1.19, 1.70) 1.61 (1.05, 2.49) 2.53 (1.96,3.26) 2.55 (1.76, 3.68)
 Washed, 20×      
  Interceptor® 1 1 1 1 1
  Interceptor®G2 0.04 (0.2, 0.09) 1.23 (1.03, 1.48) 1.50 (1.02, 2.23) 2.36 (2.02, 2.77) 2.32 (1.63, 3.31)
Culex quinquefasciatus (resistant)
 Overall      
  Interceptor® 1 1 1 1 1
  Interceptor®G2 1.05 (0.57, 1.93)* 2.55 (2.26, 2.55) 13.40 (10.75, 16.67) 1.50 (1.31, 1.73) 1.40 (1.19, 1.63)
 Unwashed      
  Interceptor® 1 1 1 1 1
  Interceptor®G2 0.74 (0.31, 1.79)* 2.52 (2.13,3.00) 12.71 (9.43,17.14) 1.52 (1.23,1.88) 1.25 (1.00, 1.57)
 Washed, 20×      
  Interceptor® 1 1 1 1 1
  Interceptor®G2 1.46 (0.62, 3.50)* 2.58 (2.17, 3.06) 14.11 (10.42, 19.11) 1.50 (1.25, 1.80) 1.55 (1.24, 1.94)
An. gambiae s.s. (susceptible)
 Overall      
  Interceptor® 1 1 1   
  Interceptor®G2 0.15 (0.11, 0.19) 0.21 (0.13, 0.32) 0.96 (0.34, 2.72)*
 Unwashed      
  Interceptor® 1 1 1   
  Interceptor®G2 0.10 (0.06, 0.15) 0.14 (0.07, 0.25) 0.65 (0.18, 2.38)*
 Washed, 20×      
 Interceptor® 1 1 1   
 Interceptor®G2 0.21 (0.15, 0.30) 0.36 (0.19, 0.69) 1.98 (0.30, 13.3)*
Aedes aegypti (susceptible)
 Overall      
  Interceptor® 1 1 1   
  Interceptor®G2 0.07 (0.05, 0.11) 0.21 (0.13, 0.32) 0.14 (0.10, 0.20)
 Unwashed      
  Interceptor® 1 1 1   
  Interceptor®G2 0.08 (0.05, 0.13) 0.53 (0.43, 0.67) 0.05 (0.03, 0.10)
 Washed, 20×      
  Interceptor® 1 1 1   
  Interceptor®G2 0.07 (0.03, 0.13) 0.43 (0.33, 0.57) 0.28 (0.18, 0.43)
  1. Odds ratio adjusted for net type, volunteer, hut position/number and day of the experiment
  2. Laboratory-reared mosquitoes were used for WHO cone, WHO tunnel and I-ACT
  3. For the experimental hut trial, the ITNs were tested against free-flying wild pyrethroid-resistant Anopheles arabiensis and Culex quinquefasciatus in Lupiro, Ifakara
  4. *p-value > 0.05