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Table 3 Measurements of deterrence compared between East African, Ifakara and West African experimental huts for three treatment arms: Olyset, Permanet 2.0 long-lasting insecticidal nets plus untreated control

From: Comparative performance of three experimental hut designs for measuring malaria vector responses to insecticides in Tanzania

Count

All mosquitoes N

All mosquitoes median IQR

Incidence rate ratio (IRR)

95 % CI

p

z

Control

 East African

42

1 (0–1.5)

1

   

 Ifakara

149

4 (2–6)

3.79

0.37–38.87

<0.0001

7.719

 West African

8

0 (0–0)

0.21

0.01–3.61

<0.0001

−4.219

Permanet

 East African

39

1 (0–2)

1

   

 Ifakara

140

3 (2–6)

3.50

0.34–36.42

<0.0001

7.029

 West African

16

0 (0–1)

0.39

0.03–5.55

0.0018

−3.116

Olyset

 East African

33

1 (0–1)

1

   

 Ifakara

161

4 (3–5.5)

4.88

0.46–52.18

<0.0001

8.344

 West African

16

0 (0–1)

0.48

0.03–6.88

0.016

−2.391

  1. The IRR is calculated from Poisson regression as the incidence of mosquitoes in the treatment relative to the control