Results: The following characteristics, present at admission to hospital, were associated with dystocia during labour (OR, 95% CI): dilatation of cervix < 4 cm (1.63, 1.38-1.92), tense cervix (1. ...

e Problem during labor of any kind [fetal-pelvic disproportion, fetal heart rate anomaly, failure of induction, dynamic dystocia (hypotonic or hypertonic uterine activity or cervical dystocia ...