Singleton births are births in pregnancies in which only one fetus is delivered live at any time during the pregnancy.
Gestational age can be classified as "preterm birth" when it occurs before 37 weeks of gestation, "early term" refers to births between 37 and 38 weeks, "full term" are between 39 and 40 weeks, and "late or post-term" encompasses 41 weeks and beyond.Â
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U.S. percentage change in gestational age from 2014-2022, by race and ethnicity
Between 2014 and 2022, the percentage change in gestational age by race and Hispanic origin of mothers in the United States demonstrated consistent increases in preterm and early term births across all maternal races/ethnic groups shown. Furthermore, all maternal racial/ethnic groups presented experienced a decrease in the share of full-term and post-term births, with the decline being more notable among Black, non-Hispanic mothers. This statistic depicts the percentage change in gestational age category for singleton births in the United States between 2014 and 2022, by race and Hispanic origin of mother.
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CDC, & NCHS. (January 30, 2024). Percentage change in gestational age category for singleton births in the United States between 2014 and 2022, by race and ethnicity [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 29, 2026, from /statistics/1451410/us-percentage-change-in-gestational-age-by-race-ethnicity/
CDC, und NCHS. "Percentage change in gestational age category for singleton births in the United States between 2014 and 2022, by race and ethnicity." Chart. January 30, 2024. ÌÇÐÄÆƽâ°æ. Accessed July 29, 2026. /statistics/1451410/us-percentage-change-in-gestational-age-by-race-ethnicity/
CDC, NCHS. (2024). Percentage change in gestational age category for singleton births in the United States between 2014 and 2022, by race and ethnicity. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 29, 2026. /statistics/1451410/us-percentage-change-in-gestational-age-by-race-ethnicity/
CDC, and NCHS. "Percentage Change in Gestational Age Category for Singleton Births in The United States between 2014 and 2022, by Race and Ethnicity." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 30 Jan 2024, /statistics/1451410/us-percentage-change-in-gestational-age-by-race-ethnicity/
CDC & NCHS, Percentage change in gestational age category for singleton births in the United States between 2014 and 2022, by race and ethnicity ÌÇÐÄÆƽâ°æ, /statistics/1451410/us-percentage-change-in-gestational-age-by-race-ethnicity/ (last visited July 29, 2026)
Percentage change in gestational age category for singleton births in the United States between 2014 and 2022, by race and ethnicity [Graph], CDC, & NCHS, January 30, 2024. [Online]. Available: /statistics/1451410/us-percentage-change-in-gestational-age-by-race-ethnicity/
