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WEDNESDAY, Nov. 14, 2018 (HealthDay News) — Short intervals between pregnancies are associated with increased risks for adverse pregnancy outcomes for women of all ages, according to a study published online Oct. 29 in JAMA Internal Medicine<\/i>.<\/p>\n
Laura Schummers, S.D., from the Harvard T.H. Chan School of Public Health in Boston, and colleagues used data from a Canadian population-based cohort of women with at least two singleton pregnancies from 2004 to 2014 with the index pregnancy resulting in a live birth. The authors evaluated the association between a short interpregnancy (delivery to conception) interval and adverse pregnancy outcomes and aimed to determine whether it is modified by maternal age.<\/p>\n
The researchers found that among 148,544 pregnancies, maternal mortality or severe morbidity risks were increased at six-month versus 18-month interpregnancy intervals for women \u226535 years (adjusted risk ratio [aRR], 2.39; 95 percent confidence interval [CI], 2.03 to 2.8) but not for women aged 20 to 34 years (aRR, 0.92; 95 percent CI, 0.83 to 1.02). For women aged 20 to 34 years, adverse fetal and infant outcome risks were more pronounced (aRR, 1.42; 95 percent CI, 1.36 to 1.47) versus women \u226535 years (aRR, 1.15; 95 percent CI, 1.01 to 1.31). Similarly, risks of spontaneous preterm delivery were increased for women 20 to 34 years old (aRR, 1.65; 95 percent CI, 1.62 to 1.68) and to a lesser extent for women \u226535 years (aRR, 1.4; 95 percent CI, 1.31 to 1.49) at six-month interpregnancy intervals. There was no meaningful difference based on maternal age in the modest increases in risks for small for gestational age and indicated preterm delivery.<\/p>\n
“The findings of this study suggest that short interpregnancy intervals are associated with increased risks for adverse pregnancy outcomes for women of all ages,” conclude the authors.<\/p>\n
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