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Table 4 Risk factors for severe maternal morbidity in the multivariable analysis

From: Severe maternal morbidity: a case-control study in Maranhao, Brazil

Multivariate analysis according to the hierarchical model OR Adjusted OR 95% CI p - value
Age  
20-34 1.00 1.00   
< 20 0.73 0.73 0.39-1.37  
≥ 35 3.26 3.11 1.53-6.31 < 0.01
Previous hypertension  
No 1.00 1.00   
Yes 2.91 2.52 1.09-5.80 0.03
History of abortion     
No 1.00 1.00   
Yes 1.72 1.61 0.97-2.68 0.07
Number of consultations  
≥ 6 1.00 1.00   
4-5 1.65 1.78 1.05-3.01 0.03
1-3 1.86 1.89 1.03-3.49 0.04
  1. Sao Luis, 2009.