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Table 4 Bi- and multivariate analyses of risk factors for developing a clinical malaria episode, including IPTp

From: Effectiveness of malaria control interventions in Madagascar: a nationwide case–control survey

Variable

Category

N cases (%)

N controls (%)

Bivariate

Multivariate

Crude OR [95 %CI]

p

Adjusted OR [95 %CI]

p

≥1 dose IPTp

Yes

3 (25.0)

11 (57.9)

0.22 [0.04–1.29]

0.093

0.27 [0.04–1.89]

0.187

No

9 (75.0)

8 (42.1)

1.00

 

1.00

 

Age group

15–24 years

11 (91.7)

8 (42.1)

14.24 [4.02–50.38]

<0.001

12.35 [3.90–39.11]

<0.001

25–49 years

1 (8.3)

11 (57.9)

1.00

 

1.00

 
  1. Transmission patterns could not be included because it caused the model not to converge (12 cases, 110 controls, 5 communes)