the following variables were studied in retrospect : duration of pregnancy , maternal weight gain , mode of delivery , foetal birthweight and the maturity of the newborn , apgar scores , ph of the umbilical artery , perinatal mortality , frequency of foetal malformations , amount of amniotic fluid and the incidence of meconium staining , placental weight and the occurrence of placental infarctions .
C0005612
birthweight
C0005910
weight