其他摘要：Background: Multiple pregnancies are responsible for the increased risk of maternal and neonatal morbidity and mortality. This study aimed to compare the perinatal outcome between multiple and singleton pregnancies. Materials and Methods: This is a retrospective cohort study. A sample of 50 multiple birth neonates- born in Fatemieh Hospital of Hamadan, Iran in 2015- was selected using simple random sampling. Meanwhile, they were compared with 50 single birth neonates in the same center on gender, gestational age, mean birth weight, Apgar score, the use of Assisted Reproductive Techniques (ART), delivery method, cause of neonatal admission, duration and short outcome of neonatal hospitalization. The data were collected from the medical files of neonates and their mothers. The data were analyses using SPSS version 16.0 software. Results: In this study, 100 neonates (50 single births and 50 multiple births) were compared. The mean gestational age and mean birth weight of multiple births were lower than that of single births (P
