Title

Unintended Pregnancy and Interpregnancy Interval by Maternal Age, National Survey of Family Growth

Document Type

Article

Publication Date

3-1-2018

Publication Title

National Survey of Family Growth. Contraception

Keywords

Birth spacing, Interpregnancy intervals, Postpartum contraception, Pregnancy intention

Abstract

Background: The relationship between unintended pregnancy and interpregnancy interval (IPI) across maternal age is not clear. Methods: Using data from the National Survey of Family Growth, we estimated the percentages of pregnancies that were unintended among IPI groups (<6, 6-11, 12-17, 18-23, 24+ months) by maternal age at last live birth (15-19, 20-24, 25-29, 30-44 years). Results: Approximately 40% of pregnancies were unintended and 36% followed an IPI<18 months. Within each maternal age group, the percentage of pregnancies that were unintended decreased as IPI increased. Conclusion: Unintended pregnancies are associated with shorter IPI across the reproductive age spectrum.

Comments

Financial support: This work was performed under employment by the US federal government; the authors did not receive any outside funding.

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