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2017, Number 4

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Rev Med Inst Mex Seguro Soc 2017; 55 (4)

Risk factors associated with preterm birth in a second level hospital

Escobar-Padilla B, Gordillo-Lara LD, Martínez-Puon H

Language: Spanish
References: 14
Page: 424-428
PDF size: 278.16 Kb.


ABSTRACT

Background: Preterm birth is one of the biggest problems in obstetrics and gynecology, given that it has an incidence of 10-11%. The objective was to identify the risk factors associated with a preterm birth.
Methods: A retrospective, observational, transversal and analytic casecontrol study was made. All premature birth incidences were determined as study objects and controls were integrated with term deliveries. A sample size of 344 patients with a control per case was calculated. A total of 688 patients were studied. Statistical analysis was descriptive, univariate and bivariate and we used the Pearson chi square test, with a p ‹ 0.05, odds ratios (OR) and 95% confidence intervals (95% CI).
Results: The risk factors associated with a preterm labor were placenta praevia: OR = 10.2 (p = 0.005); previous preterm delivery: OR = 10.2 (p = 0.005); preeclampsia: OR = 6.38 (p = 0.00); twin pregnancy: OR = 5.8 (p = 0.000); oligohydramnios: OR = 5.8 (p = 0.000); tobacco use: OR = 4.6 (p = 0.002); premature rupture of membranes (PROM): OR = 4.1 (p = 0.000); cervicovaginitis: OR = 3 (p = 0.000); urinary tract infections (UTI): OR = 1.5 (p = 0.010).
Conclusion: Maternal history of prenatal care, preclampsia, PROM, twin pregnancy, placenta praevia, cervicovaginitis, previous preterm delivery and UTI are risk factors with statistical significance associated with preterm delivery.


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