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Table 2 Results of χ 2 analysis of the differences in the phenotypic resistance of An. gambiae s.s. versus An. arabiensis when exposed to pyrethroids in Teso District

From: Pyrethroid susceptibility of malaria vectors in four Districts of western Kenya

   

% Mortality (Sample size)

  

District

Cluster

Insecticide

An. gambiae s.s.

An. arabiensis

χ2

Pvalue

Teso

Akiriamasi

Permethrin

50(8)

95(20)

7.89

0.005

Teso

Akiriamasit

Permethrin

85.7(7)

89.7(39)

0.1

0.75

Teso

Kaliwa

Permethrin

51.4(37)

7.1(14)

8.32

0.004

Teso

Kokare

Deltamethrin

85.4(48)

95.4(65)

3.4

0.07

Teso

Kokare

Permethrin

34.6(26)

71(31)

7.53

0.006

Teso

Koteko

Permethrin

82.4(51)

90.5(21)

0.76

0.21

Teso

Odioi

Deltamethrin

47.4(19)

83.3(6)

1.38

0.24

Teso

Odioi

Permethrin

35.1(97)

5.9(17)

5.78

0.02

Teso

Rwatama

Permethrin

83.5(79)

50(16)

4.62

0.03

Teso

Kengatunyi

Deltamethrin

28(43)

100(5)

1.86

0.22

Teso

Kaliwa

Deltamethrin

50(2)

44(18)

0.02

0.88

Teso

Kolanya

Deltamethrin

100(2)

78(72)

0.57

0.45

Teso

Rwatama

Deltamethrin

33(3)

81(77)

3.84

0.05

Teso

Adanya

Permethrin

100(6)

36(14)

7.01

0.008

Teso

Apatit

Permethrin

100(17)

0(0)

-

-

Teso

Apokor

Permethrin

96(47)

100(1)

0.04

0.83

Teso

Kabanyo

Permethrin

100(17)

100(2)

  

Teso

Katelepai

Permethrin

50(42)

0(1)

0.98

0.32

Teso

Kengatunyi

Permethrin

86(79)

100(4)

0.64

0.42