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HEALTH1.A Preterm birth and low birthweight: Percentage of infants born preterm by detailed race and Hispanic origin of mother, 1990–2015

excel icon HEALTH1A Excel Table
excel icon HEALTH1A Standard Error Excel Table

Characteristic 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007a 2008a 2009a 2010a 2011a 2012a 2013a 2014a 2015
Preterm (less than 37 completed weeks of gestation)
Total 10.6 10.8 10.7 11.0 11.0 11.0 11.0 11.4 11.6 11.8 11.6 11.9 12.1 12.3 12.5 12.7 12.8 10.4 10.4 10.1 10.0 9.8 9.8 9.6 9.6 9.6
Race and Hispanic originb
White, non-Hispanic 8.5 8.7 8.7 9.1 9.3 9.4 9.5 9.9 10.2 10.5 10.4 10.8 11.0 11.3 11.5 11.7 11.7 9.9 9.8 9.5 9.4 9.2 9.1 8.9 8.9 8.9
Black, non-Hispanic 18.9 19.0 18.5 18.6 18.2 17.8 17.5 17.6 17.6 17.6 17.4 17.6 17.7 17.8 17.9 18.4 18.5 14.7 14.4 14.1 13.8 13.5 13.5 13.2 13.2 13.4
American Indian or Alaska Native 11.8 10.8 11.6 12.2 12.1 12.4 11.9 12.2 12.2 12.9 12.7 13.2 13.1 13.5 13.7 14.1 14.2 10.6 10.4 10.0 10.6 10.2 10.4 10.2 10.2 10.5
American Indian or Alaska Native, non-Hispanic 12.0 11.9 11.6 12.3 12.0 12.4 11.9 12.2 12.2 12.7 12.6 13.2 13.0 13.5 13.7 14.2 14.3 10.7 10.5 10.2 10.7 10.3 10.5 10.3 10.4 10.8
Asian or Pacific Islander 10.1 10.1 9.9 10.0 10.1 9.9 10.0 10.2 10.4 10.4 9.9 10.3 10.4 10.5 10.5 10.8 10.9 9.1 9.1 9.0 9.0 8.8 8.7 8.7 8.5 8.6
Asian or Pacific Islander, non-Hispanic 10.1 10.1 9.8 10.0 10.1 9.9 10.0 10.2 10.3 10.4 9.9 10.3 10.4 10.4 10.5 10.7 10.9 9.1 9.1 9.0 8.9 8.8 8.7 8.6 8.4 8.6
Chinese 7.3 7.4 7.0 7.2 7.2 7.2 7.4 7.4 7.6 7.6 7.3 7.7 7.7
Japanese 7.7 7.5 7.9 8.0 8.2 8.3 8.2 8.1 8.7 9.3 8.3 8.8 9.2
Filipino 11.4 10.9 10.9 11.2 11.4 11.7 11.5 11.9 11.8 12.4 12.2 12.5 12.7
Hawaiian 11.3 11.2 11.4 11.5 12.2 11.0 11.5 11.0 12.0 12.3 11.7 14.2 13.5
Other Asian or Pacific Islander 10.6 11.9 10.5 10.6 10.7 10.3 10.4 10.6 10.7 10.7 10.1 10.3 10.5
Hispanic 11.0 11.0 10.7 11.0 10.9 10.9 10.9 11.2 11.4 11.4 11.2 11.4 11.6 11.9 12.0 12.1 12.2 9.3 9.4 9.1 9.1 9.0 9.1 9.1 9.0 9.1
Mexican American 10.6 10.6 10.4 10.7 10.6 10.6 10.5 10.9 11.0 11.1 11.0 11.2 11.4 11.7 11.8 11.8 11.9 9.0 9.0 8.7 8.7 8.7 8.7 8.8 8.8 8.9
Puerto Rican 13.4 13.5 13.2 13.3 13.4 13.4 13.2 13.7 13.9 13.7 13.5 13.7 14.0 13.8 14.0 14.3 14.4 12.0 11.9 11.4 11.4 11.3 11.2 10.9 11.0 11.0
Cuban 9.8 9.7 10.0 10.4 10.1 10.1 10.3 11.0 11.4 11.5 10.6 10.6 10.5 11.8 12.8 13.2 13.1 10.6 10.5 9.8 9.4 9.1 9.5 8.9 9.0 9.3
Central or South American 10.9 10.9 10.5 10.7 10.7 10.7 10.9 11.2 11.6 11.4 11.0 11.2 11.2 11.4 11.7 12.0 12.1 8.8 9.0 8.6 8.5 8.6 8.6 8.7 8.5 8.7
Other and unknown Hispanic 11.2 11.1 11.2 11.7 11.6 11.7 12.0 12.0 12.1 11.9 12.2 12.4 12.8 12.6 12.6 13.6 14.2 10.9 10.4 10.4 10.4 9.9 9.9 9.7 9.6 9.6
Late preterm (34–36 completed weeks of gestation)
Total 7.3 7.5 7.4 7.6 7.7 7.7 7.7 8.0 8.1 8.3 8.2 8.5 8.6 8.8 8.9 9.1 9.1 7.5 7.5 7.2 7.2 7.0 7.0 6.8 6.8 6.9
Race and Hispanic originb
White, non-Hispanic 6.1 6.3 6.3 6.6 6.7 6.8 6.9 7.2 7.4 7.7 7.6 7.9 8.1 8.3 8.5 8.6 8.6 7.4 7.3 7.1 6.9 6.8 6.7 6.5 6.5 6.5
Black, non-Hispanic 11.5 11.6 11.2 11.4 11.2 10.9 10.8 10.9 11.0 11.0 10.9 11.2 11.2 11.4 11.4 11.8 11.9 9.4 9.3 9.0 8.9 8.7 8.6 8.4 8.5 8.6
American Indian or Alaska Native 8.3 8.1 8.1 8.5 8.5 8.9 8.4 8.5 8.6 9.1 9.0 9.3 9.2 9.6 9.6 10.2 10.2 7.8 7.7 7.3 7.8 7.5 7.6 7.4 7.5 7.7
American Indian or Alaska Native, non-Hispanic 8.4 8.1 8.1 8.5 8.4 8.8 8.4 8.4 8.5 9.0 8.9 9.3 9.2 9.6 9.7 10.2 10.3 7.9 7.8 7.4 7.9 7.6 7.6 7.5 7.6 8.0
Asian or Pacific Islander 7.5 7.5 7.3 7.5 7.5 7.4 7.4 7.6 7.6 7.7 7.3 7.7 7.7 7.8 7.7 8.0 8.1 6.8 6.9 6.8 6.7 6.5 6.5 6.4 6.3 6.4
Asian or Pacific Islander, non- Hispanic 7.5 7.5 7.2 7.5 7.5 7.4 7.4 7.6 7.6 7.7 7.3 7.7 7.7 7.8 7.7 7.9 8.1 6.8 6.8 6.7 6.6 6.5 6.4 6.3 6.2 6.4
Chinese 5.7 5.7 5.4 5.6 5.5 5.5 5.7 5.7 5.9 5.8 5.5 6.0 5.9
Japanese 5.9 5.8 5.8 6.1 6.1 6.2 6.4 6.4 6.9 7.2 6.3 7.0 6.8
Filipino 8.3 8.0 8.1 8.5 8.2 8.7 8.3 8.8 8.7 9.0 8.9 9.3 9.4
Hawaiian 7.6 8.3 8.0 8.5 8.7 7.9 8.6 7.9 8.5 8.6 8.2 9.8 9.5
Other Asian or Pacific Islander 7.9 8.0 8.7 8.8 9.0 8.6 8.2 8.5 8.5 8.3 8.5 8.6 8.5
Hispanic 7.8 7.8 7.7 7.9 7.8 7.8 7.8 8.1 8.2 8.2 8.1 8.3 8.4 8.6 8.7 8.8 8.8 6.8 6.9 6.6 6.6 6.5 6.6 6.6 6.5 6.6
Mexican American 7.6 7.7 7.5 7.7 7.7 7.7 7.6 7.9 8.0 8.1 8.0 8.2 8.3 8.5 8.6 8.6 8.6 6.6 6.6 6.4 6.4 6.3 6.4 6.4 6.4 6.5
Puerto Rican 9.0 9.1 9.0 9.0 9.1 9.1 9.0 9.3 9.4 9.5 9.2 9.4 9.6 9.5 9.5 9.8 9.8 8.4 8.2 7.9 7.9 7.9 7.8 7.6 7.6 7.5
Cuban 6.9 6.8 7.2 7.6 7.3 7.1 7.4 8.0 8.2 8.3 7.6 7.6 7.7 8.7 9.5 9.5 9.6 7.8 7.6 7.1 6.8 6.5 6.7 6.3 6.2 6.5
Central or South American 7.7 7.9 7.6 7.7 7.6 7.6 7.8 8.0 8.3 8.3 7.8 8.1 8.0 8.3 8.5 8.7 8.8 6.5 6.7 6.3 6.3 6.3 6.2 6.3 6.2 6.4
Other and unknown Hispanic 8.0 7.9 7.9 8.4 8.0 8.3 8.4 8.4 8.5 8.3 8.6 8.9 9.2 9.0 9.2 9.8 10.2 7.9 7.6 7.5 7.5 7.1 7.1 7.0 6.9 6.8
— Not available.
a Beginning with 2014, the obstetric estimate of gestation at delivery (OE) replaces the gestational age measure based on the date of the last normal menses (LMP) as the new standard for estimating the gestational age of a newborn. Data in this table show the OE for 2007 (the first year for which national data are available) through 2015; earlier years are based on the LMP. (Martin, J. A., Osterman, M. J. K., Kirmeyer, S. E., & Gregory, E. C. W. [2015]. Measuring gestational age in vital statistics data: Transitioning to the obstetric estimate. National Vital Statistics Reports, 64 (5). Hyattsville, MD: National Center for Health Statistics.)
b The 1977 U.S. Office of Management and Budget (OMB) Standards for Data on Race and Ethnicity were used to classify persons into one of the following four racial groups: White, Black, American Indian or Alaskan Native, or Asian or Pacific Islander. The revised OMB standards issued in 1997 permitted the option of selecting more than one race. Multiple-race data were reported by 6 states in 2003, 15 states in 2004, 19 states in 2005, 23 states in 2006, 27 states in 2007, 30 states in 2008, 33 states and the District of Columbia (DC) in 2009, 38 states and DC in 2010, 40 states and DC in 2011, 41 states and DC in 2012, 44 states and DC in 2013, and 49 states and DC in 2014. The multiple-race data for these states were bridged to the single-race categories of the 1977 OMB Standards for comparability with other states. Note that data on race and Hispanic origin are collected and reported separately.
NOTE: Excludes live births with unknown gestational age. Trend data for births to Hispanic and to White, non-Hispanic and Black, non-Hispanic women are affected by expansion of the reporting area in which an item on Hispanic origin is included on the birth certificate. The number of states in the reporting area was 48 states and DC in 1990, and all 50 states and DC from 1993 onward. Trend data for births to Asian or Pacific Islander and Hispanic women are also affected by immigration. Beginning in 2003, data are no longer available for Asian or Pacific Islander subgroups. Data prior to 2007 use a different definition of gestation and therefore are not comparable with more recent data.
SOURCE: National Center for Health Statistics, National Vital Statistics System.