Authors
Abstract
Objective: The aim of this study was to estimate the frequency of preterm birth (PTB) and premature
rapture of membranes (PROM) and their associations with maternal factors.
Material and methods: This cross sectional study was carried out at Akbar–Abadi hospital in Tehran
during January 2009–Aprile 2010. Nine hundred and ninety primiparous women with gestational age more than 20 weeks and singleton pregnancy were enrolled in the study. Data were analyzed using SPSS–16. P
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