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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