FIGURE B-4. Trends in maturity: percentages of preterm and very preterm births among whites and African Americans, 1980 to 2000.

FIGURE B-4

Trends in maturity: percentages of preterm and very preterm births among whites and African Americans, 1980 to 2000. A change in reporting of some variables occurred starting with 1989 birth certificates. Source: 1985–1988 and 1995–2000 Birth Cohort Linked Birth/Infant death Data Set, CD-ROM Series 20, USDHHS, CDCP, NCHS; 1980–2000 Natality Data Set, CD-ROM Series 21, USDHHS, CDCP, NCHS.

NOTE: Change in reporting for some variables with 1989 certificate.

From: B, Prematurity at Birth: Determinants, Consequences, and Geographic Variation

Cover of Preterm Birth
Preterm Birth: Causes, Consequences, and Prevention.
Institute of Medicine (US) Committee on Understanding Premature Birth and Assuring Healthy Outcomes; Behrman RE, Butler AS, editors.
Washington (DC): National Academies Press (US); 2007.
Copyright © 2007, National Academy of Sciences.

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