About 2% of pregnancy terminations take place between 20 and 24 weeks.
Termination of pregnancy in patients with previous cesarean section - PMID: 16472563 - DOI: 10.1016/j.contraception.2005.09.007 [...] Results: A total of 13 (26%) patients in Group 1 and 79 (39.1%) in Group 2 were at more than 24 weeks' gestation. The abortion failure rate was 2% (1/50) in Group 1 and 0.5% (1/202) in Group 2 (p = .28). The median induction-to-delivery interval was 8.5 h (range, 3.0-114.2 h) for Group 1 and 9.0 h (range, 1.3-124.3 h) in Group 2 (p = .26). One case of uterine rupture and one case of dehiscence were observed, both in women in Group 1. The incidence of hemorrhage was not significantly different between Group 1 and Group 2 (2% vs. 0.9%, respectively, p = .56). The incidence of retained placenta was higher in the Group 1 (70% vs. 52.5%, respectively, p = .025). [...] Induction of second trimester abortion (12-20 weeks) with mifepristone and misoprostol: a review of 386 consecutive cases.Contraception. 2006 May;73(5):516-9. doi: 10.1016/j.contraception.2005.12.004. Epub 2006 Feb 23. Contraception. 2006. PMID: 16627037 -