The associations of parental under-education and unemployment on the risk of preterm birth: 2003 Korean National Birth Registration database


This study aimed to investigate the associations of combined parental low educational level and combined parental unemployment on the risk of preterm birth (PTB) in Korea. Data on 427,857 singleton births were obtained from the National Birth Registration (NBR) database in 2003 and analyzed. Parental education and parental employment status were combined as… (More)
DOI: 10.1007/s00038-011-0318-9


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