Table 6 Individual and household-level risk factors for Plasmodium infection (adolescents and adults).

From: Importance of household-level risk factors in explaining micro-epidemiology of asymptomatic malaria infections in Ratanakiri Province, Cambodia

Variable

Model 1: Individual-level variables

Model 1a: Individual-level variables + village

aOR

[95% CI]

p-value

aOR

[95% CI]

p-value

Age

  

0.027

  

0.057

12–15

1

[1–1]

 

1

[1–1]

 

16–29

0.48

[0.19–1.20]

 

0.53

[0.22–1.29]

 

30–49

0.61

[0.24–1.54]

 

0.67

[0.28–1.65]

 

50+

1.48

[0.55–3.95]

 

1.44

[0.56–3.68]

 

Evening farm gathering frequency

2.23

[1.10–4.52]

0.027

2.35

[1.19–4.65]

0.014

Bed net use night before survey

  

0.052

  

0.028

No BN

1

[1–1]

 

1

[1–1]

 

ITN/LLIN

0.98

[0.23–4.26]

 

0.74

[0.18–3.09]

 

Market net

0.93

[0.20–4.19]

 

0.61

[0.14–2.66]

 

Hammock net

21

[1.49–295.2]

 

15.9

[1.27–198.1]

 

Village

N/A

  

0.0035

  

Chamkar San

 

1

[1–1]

   

Phi

 

1.6

[0.72–3.55]

   

Tun

 

3.38

[1.63–7.00]

   
 

Model 2: Individual- and household-level variables

Model 2a: Individual- and household-level variables + village

 

aOR

[95% CI]

p-value

aOR

[95% CI]

p-value

Age

  

0.11

  

0.10

12–19

1

[1–1]

 

1

[1–1]

 

16–29

0.52

[0.21–1.27]

 

0.52

[0.22–1.26]

 

30–49

0.6

[0.24–1.47]

 

0.61

[0.25–1.48]

 

50+

1.22

[0.48–3.10]

 

1.24

[0.49–3.11]

 

Evening farm gathering frequency

2.17

[1.10–4.25]

0.024

2.23

[1.14–4.36]

0.019

Bed net use night before survey

  

0.038

  

0.035

No BN

1

[1–1]

 

1

[1–1]

 

ITN/LLIN

1.02

[0.25–4.18]

 

0.9

[0.22–3.75]

 

Market net

1.02

[0.24–4.30]

 

0.87

[0.20–3.76]

 

Hammock net

21.6

[1.84–253.6]

 

18.9

[1.66–216.0]

 

House main wall material

  

0.01

  

0.014

Plant/plastic

1

[1–1]

 

1

[1–1]

 

Wood/tin

0.46

[0.25–0.83]

 

0.46

[0.25–0.86]

 

Satellite dish ownership

  

0.003

  

0.004

No

1

[1–1]

 

1

[1–1]

 

Yes

9.71

[2.14–44.0]

 

8.95

[2.05–39.1]

 

Farm machine ownership

  

0.018

  

0.02

No

1

[1–1]

 

1

[1–1]

 

Yes

0.39

[0.18–0.85]

 

0.4

[0.18–0.87]

 

Household grows cassava crop

  

0.048

  

0.18

No

1

[1–1]

 

1

[1–1]

 

Yes

0.54

[0.30–0.99]

 

0.62

[0.30–1.25]

 

Household grows soy bean crop

  

0.047

  

0.36

No

1

[1–1]

 

1

[1–1]

 

Yes

0.39

[0.15–0.99]

 

0.56

[0.16–1.95]

 

Village

N/A

  

0.60

  

Chamkar San

 

1

[1–1]

   

Phi

 

1.35

[0.47–3.88]

   

Tun

 

1.66

[0.61–4.51]

   
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