TY - JOUR T1 - Prevalence of Preterm Birth and its Risk Factors in Babol City in1998 TT - بررسی شیوع نارسی در نوزادان و برخی از عوامل خطر آن در شهر بابل در سال 1377 JF - umsha JO - umsha VL - 7 IS - 4 UR - http://sjh.umsha.ac.ir/article-1-905-en.html Y1 - 2001 SP - 0 EP - 0 KW - Risk Factors / Preterm Birth N2 - The preterm birth is one of the main health problems and the most common cause of prenatal and neonatal death. The objective of this study was to determine the prevalence of preterm birth and its risk factors. We conducted cross-sectional study with 1087 sample of networks who were the total of births of Babol for three months in three hospital in 1998. The data were collected by determining gestational age using LMP and interviewing with mothers. We used multiple logistic regression analysis to estimate the standardized relative risk(RR). The result showed the prevalence of preterm birth was 9% with 95% confidence interval (7.3% , 10.7%). The risk of preterm birth was increased 2.71 times significantly among women with hypertension during pregnancy (P<0.01). The relative risk was 2.64 folds (P<0.05) among twins and 1.75 folds (P<0.05) among women with a history of abortion. The risk of preterm birth was decreased in private hospital(RR=0.58,P<0.05). In the stepwise multiple logistic regression analysis only the effect of hypertension in pregnancy (RR=3.35, P<0.01) and being twin (OR=2.64, P<0.05) and having a history of abortion (RR=1.80, P<0.05) significantly increased the risk of preterm birth and among private hospital (OR=0.57, P<0.05) , the risk was decreased significantly. Therefore , with eliminating the obstacle of prenatal care and with creating health services, the surveillance system should perform especial care in high risk pregnancies , especially , for women with a history of abortion , and hypertension and twin gestation. Thus surveillance program, continuing education , consultation and coordination between clinics and health centers contribute prevent the preterm birth. M3 ER -