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Table 3 Univariable and multivariable odds ratios (95% CI) for risk factors associated with maternal mortality, 2000–2014

From: Space-time patterns in maternal and mother mortality in a rural South African population with high HIV prevalence (2000–2014): results from a population-based cohort

   Univariable Multivariable
Explanatory variables Categories of explanatory variables Crude odds ratio Confidence interval p- value Adjusted odds ratio Confidence interval p-value
HIV Positive Yes 2.797 1.94–4.03 <.0001 2.541 1.536–4.202 <.0001
No 1    1   
Highest education level Primary or less 2.116 1.13–3.97 0.019 1.972 1.040–3.740 0.038
Secondary or more 1    1   
Age (years) 15–19 1    1   
20–24 1.80 1.06–3.06 0.03 1.704 0.800–3.629 0.167
25–29 2.766 1.67–4.58 <.0001 1.785 0.857–3.720 0.122
30–34 2.607 1.55–4.40 <.0001 1.058 0.471–3.475 0.892
35–39 1.603 0.87–2.94 0.127 0.585 0.224–1.524 0.272
40–44 0.690 0.29–1.63 0.399 0.366 0.105–1.272 0.114
45–49 1.227 0.56–2.70 0.611 0.130 0.015–1.107 0.062
Parity   1.268 1.20–1.34 <.0001 1.422 1.243–1.627 <.0001
Distance to nearest clinic ≥10 km 1.46 0.46–4.62 0.519    
<10 km 1      
Household electrified No 1.48 0.88–2.51 0.142    
Yes 1      
Year 2000–2005 1.007 0.77–1.32 0.961    
2006–2014 1