Because women with interpregnancy intervals of <3 months had the lowest risk of repeat miscarriage, counseling women to delay conception to reduce risk of miscarriage may not be warranted, a recent study suggests. The analysis included 514 pregnant women (median maternal age 30 years; 55.6% had at least 1 previous live birth) in the Right From the Start (2000-2012) community-based prospective cohort study whose most recent pregnancy before enrollment ended in miscarriage. Interpregnancy interval was defined as the time between a prior miscarriage and the last menstrual period of the study pregnancy. Among the findings:
- 81 (15.7%) participants had a repeat miscarriage in the study pregnancy.
- When compared with women with interpregnancy intervals of 6-18 months (n=136), women with intervals of <3 months (n=124) had the lowest risk of repeat miscarriage.
- Attempting to conceive immediately was not associated with increased risk of miscarriage in the next pregnancy.
Sundermann AC, Hartmann KE, Jones SH, Torstenson ES, Velez Edwards DR. Interpregnancy interval after pregnancy loss and risk of repeat miscarriage. [Published online ahead of print November 3, 2017]. Obstet Gynecol. doi:10.1097/AOG.0000000000002318.