Short interpregnancy intervals are associated with adverse birth outcomes,such as preterm birth (1,2). The risk of adverse birth outcomes has been shown to increase as the duration of short intervals decrease (i.e., or 12-17 months,6-11 months, and less than 6 months), or these patterns may reflect different maternal demographic profiles. This report examines categories of short interpregnancy intervals by maternal demographic characteristics among moment and higher-order singleton births,using revised birth certificate data for 47 states and the District of Columbia (96% of births) in 2014.
Source: cdc.gov