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Table 2 Estimated risk of severe maternal outcome (SMO = NM + MD) among women with severe hypertensive disorders during pregnancy or childbirth according to maternal characteristics, obstetric and medical history

From: Maternal near miss and death among women with severe hypertensive disorders: a Brazilian multicenter surveillance study

Predictors % SMO PLTC PR 95% CI
Total n % n %   
Age (years)        
  ≤ 19 18.7 65 16.6 1186 18.8 0.98 0.77 – 1.25
  20 – 29 46.9 167 42.7 2976 47.1 (ref)  
  30 – 39 29.6 130 33.2 1856 29.4 1.23 0.98 – 1.55
  ≥ 40 4.9 29 7.4 297 4.7 1.67 1.21 – 2.31
Skin color (a)        
  White 36.3 136 46.4 1623 35.7 (ref)  
  Non white 63.7 157 53.6 2927 64.3 0.66 0.48 – 0.91
Education (b)        
  Elementary 46.0 128 51.2 2162 45.7 1.23 0.88 – 1.73
  > elementary 54.0 122 48.8 2566 54.3 (ref)  
Marital status (c)        
  With partner 52.7 207 67.6 2783 51.8 (ref)  
  Without 47.3 99 32.4 2589 48.2 0.53 0.37 – 0.76
Number of pregnancies (d)        
  1 45.7 159 41.4 2893 45.9 0.91 0.72 – 1.16
  2 – 3 37.0 141 36.7 2330 37.0 (ref)  
  4 or more 17.4 84 21.9 1076 17.1 1.27 1.00 – 1.61
Number of Childbirths (d)        
  0 52.4 178 46.4 3327 52.8 0.80 0.65 – 1.00
  1 – 2 36.3 153 39.8 2270 36.0 (ref)  
  3 or more 11.3 53 13.8 702 11.1 1.11 0.76 – 1.63
Previous C-sections (e)        
  0 76.8 282 75.0 4797 76.9 (ref)  
  1 or more 23.2 94 25.0 1442 23.1 1.10 0.86 – 1.41
Medical history (f)        
  Chronic hypertension 22.9 92 28.0 1243 22,6 1.30 1.00 – 1.70
  Diabetes 2.7 16 4.9 139 2.5 1.87 1.00 – 3.49
  Kidney disease 1.3 17 5.2 58 1.1 4.17 2.49 – 6.98
  Collagen disorders 0.4 6 1.8 19 0.3 4.30 2.16 – 8.56
  Heart disease 1.5 19 5.8 67 1.2 4.09 2.18 – 7.64
  Smoking 3.5 12 3.6 194 3.5 1.03 0.50 – 2.11
Total   391   6315    
  1. PR: prevalence ratio adjusted by cluster effect.
  2. Missing data: (a) 1863 cases; (b) 1728 cases; (c) 1028 cases; (d) 23 cases; (e) 91 cases; (f) 888 cases.
  3. Values in bold mean they are statistically significant.