Objective: to determine the risk factors for premature birth. Methods: retrospective case-control study of 600 pregnant women assisted in a hospital,
with 298 pregnant women in the case group (who gave birth prematurely <37
weeks) and 302 pregnant women who gave birth to a full-term newborn in the control
group. Stata software version 12.2 was used. The Chi-square test was used in
bivariate analysis and logistic regression was used in multivariate analysis, from
which Odds Ratios (OR) and Confidence Intervals (CI) of 95% were derived. Results: risk factors associated with premature birth were current twin pregnancy
(adjusted OR= 2.4; p= 0.02), inadequate prenatal care (< 6 controls) (adjusted
OR= 3.2; p <0.001), absent prenatal care (adjusted OR= 3.0; p <0.001),
history of premature birth (adjusted OR= 3.7; p <0.001) and preeclampsia
(adjusted OR= 1.9; p= 0.005). Conclusion: history of premature birth, preeclampsia, not receiving prenatal care and
receiving inadequate prenatal care were risk factors for premature birth.
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