an increasing trendP < 0.01
There was an increasing trend of OASIS in attempted spontaneous vaginal delivery without episiotomy ( P < 0.01), but it did not increase the OASIS risk ( P = 0.46).
There was an increasing trend of OASIS in attempted spontaneous vaginal delivery without episiotomy ( P < 0.01), but it did not increase the OASIS risk ( P = 0.46).