Clinical characteristics and pregnancy outcomes according to preterm labor and intact membranes (PTL) or preterm premature rupture of membranes (preterm-PROM).

<p><i>GA</i>, gestational age; <i>SD</i>, standard deviation; <i>NS</i>, not significant; <i>Cx</i>, cervical.</p>†<p>Of 213 cases, the data about cervical dilatation at the time of amniocentesis through a review of medical records were not available in 11 cases.</p>‡<p>Of 213 cases, the data about clinical chorioamnionitis through a review of medical records were not available in 5 cases.