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To assess the efficacy and safety of mifepristone combined with oral or vaginal misoprostol for termination of pregnancy between 8 and 16 weeks of gestation.
This was a randomized, multi-center, open clinical trial. A total of 625 women at 8-16 weeks of gestation were randomized to receive 200 mg oral mifepristone followed by either oral misoprostol 400 µg every 3 hours or vaginal misoprostol 400 µg every 6 hours for a maximum of 4 doses 36-48 hours later. There were 417 women in oral group with 198 at 8-9 weeks and 219 at 10-16 weeks, while 208 women in vaginal group with 99 at 8-9 weeks and 109 at 10-16 weeks. The outcome measures were the success abortion rate, induction to abortion interval, the amount of bleeding, reoccurrence of menstruation and adverse events.
Abortion rate was significantly higher in vaginal group [98.1% (202/206)] than that in oral group [94.0% (390/415), P = 0.023]; concerning termination of pregnancy at 8-9 weeks and 10-16 weeks respectively, there were no significant differences b