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Table 3 Univariate and multivariate models of parasitaemia risk

From: An urban-to-rural continuum of malaria risk: new analytic approaches characterize patterns in Malawi

 

Model 1 with standard predictors

Model 2 after backwards selection

Model 3 with urbanicity measure

Predictors

Odds Ratio

CI

p

Odds Ratio

CI

p

Odds Ratio

CI

p

(Intercept)

0.23

0.15–0.34

< 0.001

0.29

0.22–0.38

< 0.001

0.53

0.38–0.73

< 0.001

Slept under ITN

0.43

0.36–0.52

< 0.001

0.63

0.55–0.73

< 0.001

0.44

0.37–0.54

< 0.001

Age

1.03

1.01–1.04

< 0.001

1.03

1.02–1.04

< 0.001

1.03

1.02–1.05

< 0.001

Gender

1.08

0.91–1.29

0.388

1.02

0.89–1.19

0.74

1.1

0.92–1.32

0.287

Water Source

         

 Piped into Yard

0.9

0.61–1.32

0.581

   

1.09

0.72–1.63

0.69

 Public Faucet

0.22

0.13–0.37

< 0.001

   

0.24

0.14–0.40

< 0.001

 Traditional Public Well

1.73

1.30–2.31

< 0.001

   

1.01

0.76–1.36

0.932

 Piped

1.2

0.75–1.94

0.447

   

1.1

0.67–1.78

0.71

River/Lake/Canal

0.73

0.49–1.11

0.139

   

0.82

0.54–1.24

0.354

Tin Roof

0.64

0.42–0.97

0.035

   

0.6

0.40–0.91

0.016

Cement floor

1.83

1.13–2.99

0.015

   

1.72

1.06–2.80

0.029

Wealth

         

 Very poor

0.83

0.66–1.05

0.13

0.76

0.63–0.92

0.006

0.89

0.70–1.13

0.344

 Poor

0.75

0.56–1.00

0.048

0.61

0.49–0.75

< 0.001

0.76

0.57–1.03

0.073

 Less poor

0.37

0.23–0.59

< 0.001

0.39

0.31–0.50

< 0.001

0.44

0.27–0.71

0.001

 Least poor

0.51

0.25–1.05

0.068

0.47

0.37–0.60

< 0.001

0.57

0.27–1.21

0.141

Distance to nearest

         

 Health Facility

1.04

1.01–1.07

0.004

1.02

1.00–1.04

0.079

   

 Road

0.98

0.95–1.02

0.271

1.01

0.98–1.03

0.549

   

 Lake

1.01

1.00–1.01

0.004

0.99

0.99–0.99

< 0.001

   

 River

1.19

1.13–1.26

< 0.001

1.09

1.05–1.13

< 0.001

   

Elevation

1

1.00–1.00

0.007

      

Population

1

1.00–1.00

0.014

      

PC 1 PC 2

      

0.97

0.97–0.98

< 0.001

Observations

2811

  

4684

  

2811

  

Cox & Snell’s R2 /

         

Nagelkerke’s R2

0.130 / 0.186

  

0.045 / 0.070

  

0.169 / 0.243

  
  1. Multivariate model 1 includes the individual components of the composite urbanicity measure except for the last two variables. Here, component 1 and 2 were included in one model. Multivariate model 2 includes the continuous urbanicity composite measure
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Malaria Journal

ISSN: 1475-2875

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