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Table 4 Crude and adjusted odds ratios for factors associated with neonatal mortality

From: Neonatal mortality in Sudan: analysis of the Sudan household survey, 2010

Factor Crude OR (95%CI) P value Adjusted OR (95% CI) P value
Maternal age in years (n= 6301) (R2=0.023)**
<20 1   1  
20 – 29 1.1 (0.61, 2.00) 0.752 1.1 (0.60, 2.00) 0.758
30 – 39 0.9 (0.50, 1.75) 0.841 0.9 (0.49, 1.72) 0.777
≥40 2.3 (1.16, 4.55) 0.017 2.4 (1.21, 4.78) 0.012
Maternal education (n= 6301) (R2= − 0.017)**
Secondary or above (>8 years) 1    
Intermediate or less (≤8 years) 1.0 (0.65, 1.60) 0.919   
Illiterate 1.2 (0.82, 1.92) 0.302   
Parity* (n= 6301) (R2= 0.013)**
2-4 children 1    
primiparae 2.3 (1.61,3.23) <0.00   
Multiparae ≥5 1.1 (0.10 , 1.61) 0.493   
Household wealth index (n= 6301) (R2= − 0.034)**
Highest 1   1  
Middle 1.1 (1.11 , 2.21) 0.834 1.1 (0.69 , 1.72) 0.710
Lowest 1.6 (1.11 , 2.21) 0.012 1.6 (1.18 , 2.47) 0.005
Place of Residence (n= 6301) (R2= − 0.001)**
Rural 1    
Urban 1.0 (0.74 , 1.41) 0.918   
Child sex (n= 6301) (R2= − 0.047)**
Female 1   1 < 0.001
Male 1.6 ( 1.30 , 2.38) 0.017 1.8 (1.31 , 2.42)  
Household head education (n= 6263) (R2= − 0.007)**
Have some education 1 0.344   
Illiterate 1.2 (0.86 , 1.55)    
Antenatal care utilization (n= 6301) (R2= − 0.016)**
Professional health care 1    
Non/ traditional care 1.2 (0.89 , 1.68) 0.211   
Ever has tetanus toxoid vaccination (n= 6301) (R2= 0.001)**
Yes 1    
No 1.0 ( 0.72 , 1.36) 0.948   
Delivery assistance (n= 6217) (R2= − 0.016)**
Yes 1    
No 1.0 ( 0.72 , 1.36) 0.948   
Mode of delivery (n= 6301) (R2= 0.024)**
Vaginal 1   1  
Caesarean section 1.6 (0.98 , 2.60) 0.060 1.6 (1.78 , 2.42) 0.013
Place of delivery (n= 6206) (R2=0.002)**
Home 1    
Health facility 1.0 (0.72 , 1.46) 0.897   
Pregnancy complications* (n= 6301) (R2=0.044)**
No 1    
Yes 1.7 (1.24 , 2.23) 0.001   
Delivery complications (n= 6301) (R2=0.030)**
No 1   1  
Yes 1.4 (1.06 , 1.90) 0.018 1.4 (1.18, 2.15) 0.002
  1. *Excluded from the model because of co linearity. ** for the crude analysis.
  2. Nagelkerke R2 for the final model = 0.060.