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Table 3 Multivariable logistic regression on the maternal characteristics associated with incidence of maternal near miss during hospitalization for childbirth care (n = 23,894), Brazil, 2011–2012

From: Factors associated with maternal near miss in childbirth and the postpartum period: findings from the birth in Brazil National Survey, 2011–2012

Characteristic Model 1a Model 2b Model 3c Final Modeld
ORe 95 % CIf p ORe 95 % CIf p ORe 95 % CIf p ORe 95 % CIf p
Maternal age (years)
 12–19 0.71 0.48–1.06   0.96 0.60–1.52        
 20–34 1    1         
 35 and over 1.93 1.25–2.97 0.001 1.37 0.87–2.17 0.358       
Schooling level (years)
 15 or more 1    1    1      
 11–14 1.96 0.91–4.24   1.65 0.81–3.39   1.78 0.85–3.73     
 8–10 2.49 1.15–5.37   2.17 1.04–4.54   2.48 1.15–5.33     
 0–7 2.66 1.04–6.78 0.106 2.07 0.84–5.08 0.185 2.51 0.99–6.36 0.075    
Skin colorg
 White 1            
 Mixed 1.15 0.76–1.75           
 Black 1.05 0.43–2.56 0.777          
Conjugal situation
 With partner 1            
 Without partner 0.97 0.67–1.42 0.893          
Primipara
 No 1    1    1      
 Yes 2.40 1.53–3.77 <0.001 2.02 1.26–3.25 0.004 1.45 0.90–2.34 0.131    
Previous C-section
 0 1    1    1      
 1 1.89 1.06–3.38   1.61 0.91–2.88   1.07 0.62–1.86     
 2 or more 2.64 1.62–4.30 <0.001 2.13 1.31–3.45 0.003 1.30 0.74–2.29 0.638    
Antenatal care
 Yes     1    1    1   
 No     4.15 1.34–12.81 0.014 4.44 1.37–14.37 0.013 4.65 1,51–14.31 0007
Number of services before admission to delivery care
 0     1    1    1   
 1     1.50 0.84–2.68   1.57 0.89–2.75   1.69 0.98–2.92  
 2 or more     3.88 1.84–8.18 0.002 4.05 1.92–8.54 <0.001 4.49 2.12–9.52 <0.001
Clinical or obstetric complicationsh
 No     1    1    1   
 Yes     10.28 7.51–14.06 <0.001 9.26 6.66–12.87 <0.001 9.29 6.69–12.90 <0.001
Type of delivery
 Vaginal        1    1   
 Elective C-section        2.67 1.70–4.18   2.54 1.67–3.88  
 Intrapartum C-section        1.02 0.53–1.94   1.05 0.54–2.03  
 Forceps        9.08 3.92–21.06 <0.001 9.37 4.01–21.91 <0.001
  1. aModel 1 = analyses were adjusted for age, schooling level, self-reported skin color, conjugal situation, parity and number of previous C-sections;bModel 2 = analyses were adjusted for age, schooling level, parity, number of previous C-sections, antenatal care, diagnoses of clinical or obstetric emergencies, number of services searched before admission to delivery care; cModel 3 = analyses were adjusted for schooling level, parity, number of previous C-sections, antenatal care, diagnoses of clinical or obstetric emergencies, number of services searched before admission to delivery care and type of delivery; dFinal Model = analyses were adjusted for antenatal care, diagnoses of clinical or obstetric emergencies, number of services searched before admission to delivery care and type of delivery; eOR = odds ratio; fCI = confidence interval; gPregnant women with East Asian or indigenous skin color were excluded from this analysis; hWomen who presented with one of the following criteria were considered to present clinical or obstetric complications: hypertensive disorders, diabetes, placenta previa, placental abruption, HIV infection and other maternal infections