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Table 1 Unadjusted and fully adjusted Odd ratios (OR) and 95% Confidence Interval (CI) of short birth interval (<=24 months) for all women of reproductive age (15–49 years) based on logistic regression and Bayesian geo-additive model

From: An exploratory spatial analysis of geographical inequalities of birth intervals among young women in the Democratic Republic of Congo (DRC): a cross-sectional study

Variables n = 7172% Un-Adjusted Adjusted Bayesian  
   Odds ratio 95% C.I. Odds ratio 95% C.I. Odds ratio 95% C.I.
Province        
Kinshasa 23.5 RC   RC   0.85 0.74, 0.95
Bas-Congo 24.2 1.036 0.79, 1.36 0.99 0.75, 1.32 0.85 0.77, 0.94
Bandundu 23.4 0.994 0.77, 1.28 0.97 0.74, 1.27 0.88 0.77, 0.96
Equateur 31.4 1.485 1.17, 1.88 1.39 1.09,1.80 1.06 0.97, 1.17
Orientale 26.7 1.181 0.91, 1.54 1.09 0.82, 1.45 0.94 0.84, 1.06
Nord-Kivu 35.3 1.770 1.39, 2.26 1.62 1.25,2.11 1.12 1.02, 1.24
Maniema 27.6 1.241 0.97, 1.59 1.13 0.87, 1.46 0.94 0.83, 1.05
Sud-Kivu 38.0 1.993 1.57, 2.53 1.83 1.42, 2.37 1.17 1.05, 1.29
Katanga 30.8 1.446 1.14, 1.84 1.37 1.07,1.76 1.02 0.93, 1.11
Kasaï Occident 31.1 1.470 1.16 1.87 1.37 1.06,1.77 1.18 1.06, 1.32
Kasaï Oriental 37.0 1.909 1.52, 2.40 1.78 1.39, 2.27 1.04 0.93, 1.15
Location of residence        
Urban 28.9 RC   RC    
Rural 31.1 1.109 1.00, 1.23 1.00 0.89, 1.14 1.07 0.97, 1.17
Household economic status        
low income household 30.5 0.992 0.88, 1.11    0.98 0.80, 1.01
middle income household 28.6 0.902 0.78, 1.04    0.86 0.77, 0.94
Higher income Household 30.7 RC      
Education        
No education 32.1 1.227 1.07, 1.41 1.07 0.91, 1.25 1.08 0.97, 1.19
Primary 30.8 1.157 1.03, 1.30 1.06 093, 1.22 1.06 1.00, 1.16
Secondary and higher 27.8 RC   RC    
Age        
15-19 47.3 2.584 1.61,4.14 2.513 1.56, 4.04   
20-24 37.9 1.754 1.25, 2.47 1.790 1.27, 2.52   
25-29 30.1 1.238 0.88, 1.73 1.309 0.93, 1.84   
30-34 29.2 1.187 0.85 1.66 1.253 0.89, 1.76   
35-39 25.9 1.005 0.71, 1.42 1.054 0.74, 1.50   
40-44 24.7 0.945 0.66, 1.36 .994 0.69, 1.44   
45-49 25.8 RC   RC    
Use of contraception        
Not using 31.0 1.125 0.90, 1.41    0.97 0.85, 1.08
Traditional & folkloric 27.4 0.945 0.74, 1.21     
Modern method 28.5 RC      
Breastfeeding practice        
Never 30.0 1.021 0.91, 1.14    1.07 0.99, 1.15
Exclusive 32.4 1.144 0.99, 1.31    1.08 1.00, 1.17
Mixed 29.6 RC      
  1. RC: Reference Category.