Table 2

Results for Anopheles epiroticus of the experimental hut trial in the Mekong delta, southern Vietnam

Outcomes measures^A

Control

PermaNet 2.0 unwashed

PermaNet 3.0 unwashed

PermaNet 2.0 20× washed

PermaNet 3.0 20× washed

CTN Washed just before exhaustion (5 × washed)

ENTRY RATE

Total females caught

4114

2851

3289

3038

2671

3821

Females caught per night

114.3^a

79.2^{a, b}

91.4^{a, b}

84.4^{a, b}

74.2^b

106.1^{a, b}

Deterrence % (T_C - T_T)/(T_C)*100

--

30.7

20.1

26.2

35.1

7.1

EXIT RATE

Total Females in veranda

1757

1105

1185

1419

921

2043

Exophily %

42.7^a

38.8^b

36.0^c

46.7^d

34.5^c

53.5^e

95% CI

41.2 - 44.2

37.0 - 40.6

34.4 - 37.7

44.9 - 48.5

32.7 - 36.3

51.9 - 55.1

BLOOD FEEDING RATE

Total females blood fed

999

189

150

236

178

334

blood fed (%)

24.3^a

6.6^b

4.6^c

7.8^{b, d}

6.7^b

8.7^d

95% CI

23.0 - 25.6

5.7 - 7.6

3.9 - 5.3

6.8 - 8.8

5.7 - 7.7

7.9 - 9.7

Blood fed inhibition % (%BF_C-%BF_T)/(%BF_C)*100

--

72.7

81.2

68.0

72.6

64.0

personal protection % (BF_C-BF_T)/(BF_C)*100

--

81.1

85.0

76.4

82.2

66.6

MORTALITY RATE

Total females dead

1394

2617

3145

2487

2437

2645

Overall mortality (%)

34.1^a

92.2^b

96.4^c

82.3^d

91.6^b

69.7^e

95% CI

32.7 - 35.6

91.1 - 93.2

95.7 - 97.0

80.9 - 83.6

90.5 - 92.6

68.2 - 71.1

Overall insecticidal effect (D_T-D_C)/(T_C)*100

--

29.7

42.6

26.6

25.4

30.4

Overall mortality among blood fed (%)

10.1^a

89.9^b

94.7^b

93.6^b

92.0^b

81.2^c

95% CI

8.3 - 12.1

84.7 - 93.8

98.8 - 97.7

89.6 - 96.4

87.0 - 95.6

76.6 - 85.3

Overall corrected mortality among blood fed (%)

--

88.8

94.1

92.8

91.2

79.1

Number in the same row sharing a letter superscript do not differ significantly (P > 0.05). Significance level for difference P < 0.05 ^ATc: total number of mosquitoes collected in control arm; T_T: total number of mosquitoes collected in treated arm; BF_C: total number of blood fed females in the control arm; BF_T: total number of blood-fed female mosquitoes in the treated arm; D_C: total number of dead mosquitoes in the control arm; D_T : total number of dead mosquitoes in the treated arm.

Van Bortel et al. Malaria Journal 2009 8:248   doi:10.1186/1475-2875-8-248