Table 1

Protective efficacy of house design modifications against house-entering malaria vectors

Anopheles gambiae

Survey Date

No. collected in control houses

No. collected in modified houses

Mean number of mosquitoes in control houses (95% CIs)

Mean number of mosquitoes in modified houses (95%CIs)

Percentage reduction compared with control

10/22/07

37

12

4(2–6)

1(1–3)

68

11/05/07

41

10

4(2–6)

1(-1–3)

76*

11/21/07

66

14

7(4–9)

1(-1–4)

79*

12/03/07

55

11

6(3–8)

1(-1–3)

80*

12/18/07

75

15

7(2–12)

1(0–2)

82*

02/05/08

66

16

7(2–12)

2(-0–4)

76*

02/21/08

77

19

8(1–15)

2(0–4)

76*

03/06/08

84

17

8(3–14)

2(1–3)

80*

CI, confidence interval, * P < 0.05, Degree of freedom 18 (n-2) for all surveys dates, No, Number.

Atieli et al. Malaria Journal 2009 8:108   doi:10.1186/1475-2875-8-108