بررسی شیوع نارسی در نوزادان و برخی از عوامل خطر آن در شهر بابل در سال 1377

The&nbsp;&nbsp; preterm&nbsp;&nbsp; birth&nbsp; is one of the &nbsp;main&nbsp; health problems and the most &nbsp;&nbsp; common&nbsp;&nbsp; cause&nbsp; of&nbsp; prenatal&nbsp;&nbsp; and&nbsp; neonatal&nbsp; death. The &nbsp;objective of this &nbsp;&nbsp; study was to determine the prevalence of preterm birth and its risk factors. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; We conducted&nbsp; cross-sectional study with 1087 sample of networks who &nbsp;&nbsp; were the&nbsp;&nbsp; total of&nbsp; births of Babol for three months in three hospital in 1998. &nbsp;&nbsp; The&nbsp;&nbsp; data were&nbsp; collected&nbsp; by&nbsp; determining gestational age using LMP and &nbsp;&nbsp; interviewing&nbsp; with&nbsp; mothers. We&nbsp; used&nbsp; multiple &nbsp;logistic regression analysis to &nbsp;&nbsp; estimate the standardized relative risk(RR). &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The&nbsp;&nbsp; result&nbsp;&nbsp; showed&nbsp; the&nbsp; prevalence&nbsp; of&nbsp; preterm birth was 9% with 95% &nbsp;&nbsp; confidence&nbsp; interval (7.3% , 10.7%). The risk of&nbsp; preterm&nbsp; birth&nbsp; was increased &nbsp;&nbsp; 2.71 times significantly among women with hypertension during pregnancy &nbsp;&nbsp; (P<0.01). The relative risk was 2.64 folds (P<0.05) among twins and 1.75 folds &nbsp;&nbsp; (P<0.05) among women with a history of abortion. The risk &nbsp;of&nbsp; preterm birth &nbsp;&nbsp; was decreased in private hospital(RR=0.58,P<0.05). In the stepwise multiple &nbsp;&nbsp; logistic regression&nbsp; analysis&nbsp; only&nbsp; the&nbsp;&nbsp; effect&nbsp; of hypertension in pregnancy &nbsp;&nbsp; (RR=3.35, P<0.01) and being twin (OR=2.64, P<0.05) and having a history of &nbsp;&nbsp; abortion (RR=1.80, P<0.05) significantly&nbsp; increased&nbsp; the&nbsp; risk &nbsp;of preterm birth &nbsp;&nbsp; and among&nbsp; private&nbsp; hospital&nbsp; (OR=0.57, P<0.05) , the&nbsp; risk&nbsp; was&nbsp; decreased &nbsp;&nbsp; significantly. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Therefore , with&nbsp;&nbsp; eliminating&nbsp; the&nbsp; obstacle&nbsp; of&nbsp; prenatal&nbsp;&nbsp; care and with &nbsp;&nbsp; creating health services, the surveillance system&nbsp; should&nbsp; perform&nbsp; especial &nbsp;&nbsp; care&nbsp; in&nbsp; high&nbsp; risk&nbsp;&nbsp; pregnancies , especially ,&nbsp; for&nbsp; women&nbsp; with&nbsp; a&nbsp; history of &nbsp;&nbsp; abortion , and hypertension and twin gestation. Thus surveillance program, &nbsp;&nbsp; continuing education , consultation and coordination between clinics and &nbsp;&nbsp; health centers contribute prevent the preterm birth.