Fertility of Men and Women Aged 15–49 in the United States: National Survey of Family Growth, 2015–2019
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Fertility of Men and Women Aged 15–49 in the United States: National Survey of Family Growth, 2015–2019

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      Objective—This report presents national estimates of selected fertility measures for men and women aged 15–49 in the United States in 2015–2019, based on data from the National Survey of Family Growth (NSFG). Overall estimates for 2015–2019 are compared with those for 2011–2015.

      Methods—Data were collected through in-person interviews with a nationally representative sample of the household population aged 15–49 in the United States in 2015–2019. The sample was made up of 21,441 respondents aged 15–49, including 9,746 men and 11,695 women. The NSFG response rate for the 2015–2019 survey period was 65.9% for women and 62.4% for men. Fertility measures in this report include ever had a biological child, number of children born alive or fathered, timing and relationship context of the first birth, and birth spacing.

      Results—Among women and men aged 40–49 in 2015–2019, 84.3% of women had given birth and 76.5% of men had fathered a child. On average, women aged 15–49 had 1.3 biological children and men aged 15–49 had fathered 0.9 children. The mean age at first birth was 24.1 for women and 27.0 for men. Among women, 29.7% of first births occurred during their teen years and 52.1% occurred during ages 20–29. Among men, 7.3% of first births occurred at ages younger than 20 and 58.0% occurred during ages 20–29. In 2015–2019, nearly one-third of women aged 15–49 with a birth only had one birth at the time of the interview, about one-third had a second birth within 36 months of their first birth, and one-third had a second birth more than 36 months after their first birth. Among women, roughly one-half of first births occurred before marriage and one-half of all premarital first births occurred within cohabiting unions.

      Suggested citation Martinez GM, Daniels K. Fertility of men and women aged 15–49 in the United States: National Survey of Family Growth, 2015–2019. National Health Statistics Reports; no 179. Hyattsville, MD: National Center for Health Statistics. 2023. DOI: https://dx.doi.org/ 10.15620/cdc:122080.


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