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. 2020 Jul 15;54:71. doi: 10.11606/s1518-8787.2020054002065

Table 3. Number of cases and controls, odds ratio, 95% confidence interval and p-value of factors related to health care during prenatal care and childbirth (section 4).

Variables Cases (n = 65) Controls (n = 130) OR 95%CI p


n % n %
Number of prenatal appointments              
< 6 appointments 18 27.7 27 20.8 Ref -  
≥ 6 appointments 47 72.3 103 79.2 0.684 0.344–1.363 0.279
First prenatal appointment*              
≤ 16 weeks 52 81.3 105 80.8 Ref -  
> 16 weeks 12 18.8 25 19.2 0.969 0.451–2.082 0.936
Pre-natal care institution*              
Public 54 84.4 103 79.2 Ref -  
Private 10 15.6 27 20.8 0.706 0.318–1.567 0.391
Vaccination during pregnancy              
No 4 6.2 10 7.7 Ref -  
Yes, or immunized 61 93.8 120 92.3 1.271 0.383–4.218 0.695
Residence with FHS coverage              
No 5 7.7 7 5.4 Ref -  
Yes 60 92.3 123 94.6 0.683 0.208–2.241 0.527
Type of delivery              
Vaginal 40 61.5 89 68.5 Ref -  
Cesarean section 25 38.5 41 31.5 1.357 0.729–2.526 0.335

FHS: Family Health Strategy RC: odds ratio; 95%CI: 95% confidence interval; p: level of statistical significance; Ref: reference category

* A participating puerperal woman did not perform prenatal care and was considered absent in the analysis of the data of the first prenatal and prenatal appointment.