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Table 5 Unadjusted and adjusted odds ratio of factors influencing malaria infection using microscopy test results

From: Housing type and risk of malaria among under-five children in Nigeria: evidence from the malaria indicator survey

Characteristics

Unadjusted estimates

Adjusted estimates

OR

95% CI

p-value

aOR

95% CI

p-value

Child age (months)

 0–6

1

–

 

1

–

 

 7–23

2.58

1.18–5.67*

0.02

2.29

1.21–4.34*

< 0.01

 24–59

4.49

2.06–9.79*

< 0.01

5.67

3.01–10.70*

< 0.01

Zone

 South West

1

–

 

1

–

 

 North Central

2.02

1.60–2.55*

< 0.01

0.61

0.47–0.79*

< 0.01

 North East

1.79

1.41–2.27*

< 0.01

0.35

0.27–0.46*

< 0.01

 North West

3.46

2.78–4.32*

< 0.01

0.49

0.37–0.64*

< 0.01

 South East

0.86

0.63–1.16*

0.33

0.59

0.44–0.79*

< 0.01

 South South

1.28

0.99–1.67*

0.06

0.42

0.31–0.55*

< 0.01

Location

 Urban

1

–

 

1

–

 

 Rural

3.98

3.42–4.63*

< 0.01

1.59

1.33–1.89*

< 0.01

Wealth quintile

 Richest

1

–

 

1

–

 

 Poorest

15.61

11.57–21.06*

< 0.01

5.51

3.83–7.93*

< 0.01

 Poorer

13.51

10.05–18.16*

< 0.01

5.15

3.72–7.13*

< 0.01

 Middle

7.06

5.22–9.55*

< 0.01

3.51

2.64–4.65*

< 0.01

 Richer

3.78

2.77–5.1*8

< 0.01

1.89

1.46–2.45*

< 0.01

Slept under ever treated net

 No

1

–

 

1

–

 

 Yes

1.31

1.18–1.45*

< 0.01

1.21

1.08–1.36*

< 0.01

Slept under LLIN

 No

1

–

 

1

–

 

 Yes

1.32

1.19–1.46*

<0.01

1.21

1.08–1.36*

< 0.01

Dwelling sprayed against mosquito in last 12 months

 Yes

1

–

 

1

–

 

 No

1.83

1.19–2.85*

< 0.01

0.37

0.10–1.38

0.14

Floor materials

 Improved

1

–

 

1**

–

 

 Unimproved

2.50

2.22–2.82*

< 0.01

   

Roof materials

 Improved

1

–

 

1**

–

 

 Unimproved

2.92

2.57–3.33*

< 0.01

   

Wall materials

 Improved

1

–

 

1**

–

 

 Unimproved

3.05

2.70–3.44*

< 0.01

   

All building material

 Totally improved

1

–

 

1

–

 

 Partially improved

2.21

1.93–2.54*

< 0.01

1.02

0.86–1.21

0.82

 Nothing improved

4.77

4.06–5.61*

< 0.01

1.05

1.02–1.12*

0.04

  1. * Significant at 5% test of logistic regression; ** dropped due to multicollinearity: OR odds ratio, aOR adjusted odds ratio