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Table 4 Container and water characteristics (categorical variables) in urban and rural sites in Anapoima municipality, Colombia, October-December 2011. Both mosquito-positive and negative containers are included. Differences between urban and rural sites were tested using Chi-square test

From: A cross-sectional survey of Aedes aegypti immature abundance in urban and rural household containers in central Colombia

Variable

Value

Urban (%)

Rural (%)

Chi-square

P

n = 36

n = 35

Container type

Wash basin (alberca)

52.8

60.0

0.38

0.540

Ground tank

47.2

40.0

 

Location of container

Outdoors

52.8

73.5

3.22

0.073

Indoors

47.2

26.5

 

Material of container

Plastic

33.3

20.6

6.31

0.043

Cement

55.6

79.4

 

Metal

11.1

0.0

 

Source of water

Village pipe

5.6

62.9

40.33

< 0.0001

Municipal pipe

61.1

5.7

 

Rain only

11.1

11.4

 

Rain + village pipe

8.3

17.1

 

Rain + municipal pipe

13.9

0.0

 

Village pipe + river + spring

0.0

2.9

 

Use of water

Washing + cleaning

58.3

60.0

0.32

0.956

Multiple uses, including drinking

11.1

11.4

 

Multipe uses, excluding drinking

25.0

25.7

 

Drinking only

5.6

2.9

 

Lid status

Effective lid

22.2

8.8

2.42

0.299

None

58.3

70.6

 

Ineffective lid

19.4

20.6

 

Frequency of container washing

Weekly

27.8

48.6

3.94

0.140

Monthly

52.8

31.4

 

Never

19.4

20.0

 

Location in shade

Yes

50.0

38.2

1.08

0.584

No

16.7

23.5

 

Partial

33.3

38.2

 

Location under roof

Yes

55.6

55.9

2.58

0.275

No

13.9

26.5

 

Partial

30.6

176

 

Algae in container

Present

19.4

22.9

0.12

0.725

Organic material in container

Present

66.7

42.9

4.06

0.044

Macroinvertebrates in container

Present

19.4

5.7

3.02

0.082