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Table 3 Logistic regression analysis to compare mosquito blood-feeding success in Interceptor and Interceptor G2 ITNs after exposure in WHO tunnel test, 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

  Tunnel I-ACT Hut Huts with netting window
OR (95% CI) OR (95% CI) OR (95% CI) OR (95% CI)
Anopheles arabiensis (resistant)
 Overall     
  Interceptor® 1 1 1 1
  Interceptor®G2 1.75 (1.46, 2.09)* 1.53 (1.10, 2.13)* 1.04 (0.74, 1.47) 1.42 (0.80, 2.53)
 Unwashed     
  Interceptor® 1 1   1
  Interceptor®G2 1.92 (1.48, 2.48)* 1.67 (1.07, 2.62)* 1.06 (0.54,2.10) 1.81 (0.79, 4.14)
 Washed, 20×     
  Interceptor® 1 1 1 1
  Interceptor®G2 1.60 (1.24, 2.05)* 1.37 (0.83, 2.25) 1.09 (0.72, 1.63) 1.15 (0.53, 2.50)
Culex quinquefasciatus (resistant)
 Overall     
  Interceptor® 1 1 1 1
  Interceptor®G2 0.73 (0.53, 1.00) 0.13 (0.07, 0.23)* 1.34 (0.88, 2.04) 0.63 (0.49, 0.81)*
 Unwashed     
  Interceptor® 1 1   1
  Interceptor®G2 1.36 (0.85, 2.17) 0.11 (0.05, 0.26)* 1.04 (0.76, 1.42) 0.67 (0.45, 1.02)
 Washed, 20×     
  Interceptor® 1 1 1 1
  Interceptor®G2 0.41 (0.26, 0.65)* 0.14 (0.06, 0.33)* 1.11 (0.86, 1.42) 1.59 (0.43, 0.82)*
An. gambiae s.s. (susceptible)
 Overall     
  Interceptor® 1 1   
  Interceptor®G2 1.28 (1.03, 1.59)* 1.55 (0.86, 2.80)
 Unwashed     
  Interceptor® 1 1   
  Interceptor®G2 1.95 (1.46, 2.61)* 1.41 (0.63, 3.17)
 Washed, 20×     
  Interceptor® 1 1   
  Interceptor®G2 1.81 (1.35, 2.41)* 1.75 (0.69, 4.41)
Aedes aegypti (susceptible)
 Overall     
  Interceptor® 1 1   
  Interceptor®G2 1.46 (1.14, 1.87)* 1.63 (0.87, 3.04)
 Unwashed     
  Interceptor® 1 1   
  Interceptor®G2 2.03 (1.40, 2.93)* 1.92 (0.87, 4.24)
 Washed, 20×     
  Interceptor® 1 1   
  Interceptor®G2 1.10 (0.79, 1.54) 1.20 (0.43, 3.36)
  1. Odds ratio adjusted for net type, volunteer, hut position/number and day of the experiment
  2. Laboratory-reared mosquitoes were used for 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