Multiple pregnancy, short cervix, part‐time worker, steroid use, low educational level and male fetus are risk factors for preterm birth in <scp>J</scp>apan: A multicenter, prospective study

Abstract

Multiple pregnancy and cervical shortening at 20-24 weeks of gestation was a stronger risk factor for preterm birth. Any pregnant woman being part-time employee or low educational level, having a male fetus and requiring steroid treatment should be watched for the development of preterm birth.