Table 4

Intervention effects by socio-economic status of respondents

Ma

Low (0–1)

Medium-low (2)

Medium (3)

High (4+)

Test for interactionsc


(1) Comp. (n = 363)

(2) Inter. (n = 492)

(3) Comp. (n = 344)

(4) Inter. (n = 433)

(5) Comp. (n = 234)

(6) Inter. (n = 369)

(7) Comp. (n = 245)

(8) Inter. (n = 506)

(9) Test statistic

(10) p


Knowledge of malaria

Mosquito bites cause malaria

52.0%

71.1%

56.7%

73.9%

55.4%

72.0%

69.5%

85.3%

0.60

0.896

Knowledge of nets and treatment

Familiar with mosquito nets

86.3%

95.0%

92.6%

95.3%

94.5%

95.6%

95.3%

96.8%

6.92

0.074

Ever heard of insecticide treatment

6.9%

42.2%

11.6%

47.9%

17.7%

56.4%

25.7%

63.2%

5.63

0.131

ITN kills or repels mosquitoes

4.6%

32.5%

8.4%

38.2%

12.9%

43.4%

19.2%

47.0%

10.25

0.017

Know that ITN needs re-treatment

0.3%

14.4%

0.0%

19.7%

2.3%

20.9%

7.2%

26.3%

29.94

0.000

No disadvantages to ITN

3.1%

17.3%

4.9%

25.6%

11.0%

31.6%

13.8%

27.8%

12.22

0.007

Ever heard of PowerNET

4.9%

63.7%

6.4%

65.8%

9.7%

69.2%

25.0%

76.4%

18.84

0.000

Ever heard of POWERCHEM

0.0%

16.0%

0.6%

19.0%

1.4%

23.3%

5.0%

29.4%

16.22

0.001

Access to mosquito nets

Access to mosquito nets (in minutes)

282.76

132.49

216.73

138.10

198.85

147.47

171.93

107.90

8.85

0.000

Access to nets in 15 minutes or less

4.4%

26.4%

5.6%

22.4%

9.4%

28.5%

17.7%

38.1%

9.80

0.020

Beliefs about malaria protection

One can protect oneself from malaria

52.6%

69.3%

53.1%

72.8%

61.7%

77.6%

64.2%

83.5%

1.86

0.601

One can protect by using a net

11.4%

34.9%

12.8%

34.8%

20.5%

35.8%

30.6%

44.9%

12.98

0.005

One can protect by using an ITN

0.4%

5.1%

0.6%

7.6%

0.4%

11.2%

2.2%

11.1%

4.84

0.184

Behaviour

Number of mosquito nets in household

0.15

0.16

0.10

0.23

0.22

0.42

0.57

0.88

6.86

0.000

Number of ITNs owned by household

0.07

0.10

0.03

0.15

0.04

0.27

0.05

0.51

27.48

0.000

Ever had ITN in household

0.0%

6.8%

0.0%

12.0%

2.0%

21.0%

4.3%

26.8%

12.25

0.007

Ever bought PowerNET

0.0%

6.8%

0.0%

12.3%

2.0%

22.2%

4.6%

29.5%

12.22

0.007

Ever bought POWERCHEM

0.0%

1.9%

0.0%

4.6%

0.4%

9.4%

1.7%

11.1%

5.66

0.129

Usually sleeps under a net

1.1%

6.9%

2.1%

9.5%

7.6%

20.2%

17.9%

30.4%

7.76

0.051


a Means and proportions adjusted for age of respondent, sex of respondent, urban/rural residence; education, marital status, and number of children. b Not adjusted for marital status (divorced/separated/windowed). c Test statistic depends on whether adjusted mean or adjusted proportion was estimated: for adjusted means the test statistics used an F-test was used with 7 and 2971 df for the between group differences and with 3 and 2971 df for the interaction effects, for adjusted proportions a likelihood ratio test was used following a χ2 distribution with 7 df for the between group differences and 3 df for the interaction effect.

Agha et al. Malaria Journal 2007 6:13   doi:10.1186/1475-2875-6-13

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