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Table 1 Mean mosquito densities in each year, region, island and mainland

From: Impacts of insecticide treated bed nets on Anopheles gambiae s.l. populations in Mbita district and Suba district, Western Kenya

Factors

An. gambiae s.l.

An. gambiae s.s.

An. arabiensis

 

Mean (SD)

Mean (SD)

%

Mean (SD)

%

11 villages

     

 Year

     

  1999

28.5 (42.79)

25.8 (41.61)

90.6

2.7 (4.42)

9.4

  2008

2.0 (4.04)

1.3 (3.35)

60.7

0.8 (1.72)

39.3

  2010

2.0 (3.49)

1.5 (2.84)

72.4

0.5 (1.42)

27.6

 Region

     

  Western

6.1 (21.04)

5.2 (20.27)

86.6

0.8 (2.69)

13.4

  Eastern

7.1 (20.69)

6.0 (19.71)

85.2

1.1 (2.26)

14.8

 Island/mainland

     

  Island

5.0 (13.07)

4.0 (11.32)

80.5

1.0 (2.74)

19.5

  Mainland

9.3 (29)

8.3 (28.54)

89.9

0.9 (1.91)

10.1

 Total

6.7 (20.84)

5.7 (19.95)

85.7

1.0 (2.45)

14.3

19 villages

     

 Year

     

  2008

2.4 (4.99)

0.8 (2.65)

32.4

1.6 (3.88)

67.6

  2010

2.6 (7.52)

1.3 (2.75)

54.1

1.4 (6.92)

45.9

 Region

     

  Western

1.9 (3.71)

1.5 (3.36)

77.8

0.4 (1.2)

22.2

  Central

3.5 (5.74)

1.7 (3.1)

44.3

1.8 (4.35)

55.7

  Eastern

2.4 (7.88)

0.6 (1.94)

27.2

1.8 (7.54)

72.8

 Island/mainland

     

  Island

2.2 (3.76)

1.6 (2.93)

72.1

0.6 (1.59)

27.9

  Mainland

2.7 (7.76)

0.8 (2.53)

29.7

1.9 (7.21)

70.3

 Total

2.5 (6.56)

1.1 (2.71)

43.9

1.5 (5.82)

56.1

31 villages (2010)

     

 Region

     

  Western

1.5 (2.98)

1.1 (2.47)

75.1

0.4 (1.27)

24.9

  Central

3.2 (8.98)

1.5 (2.97)

53.9

1.7 (8.42)

46.1

  Eastern

1.3 (2.41)

0.2 (0.45)

12.4

1.1 (2.23)

87.6

 Island/mainland

     

  Island

2.2 (3.61)

1.7 (2.91)

74.5

0.5 (1.45)

25.5

  Mainland

2.3 (7.58)

0.7 (2.12)

34.8

1.6 (7.2)

65.2

 Total

2.2 (6.61)

1 (2.43)

47.9

1.3 (6.06)

52.1