Demography

, Volume 42, Issue 2, pp 259–273 | Cite as

The age pattern of first-birth rates among U.S. women: The bimodal 1990s

  • Rachel Sullivan
Article

Abstract

Between 1990 and 2002, the age pattern of Type I first-birth rates (i.e., the hazard of a first birth) among U.S. women was bimodal. This pattern, driven by changing differential fertility patterns among racial and ethnic groups, reached its apex at the mid-1990s and had almost vanished by the decade’s end. Research on first-birth timing has tended to focus on Type II first-birth rates and therefore has failed to identify this larger, bimodal pattern. This article presents the benefits of using Type I rates, documents the emergence of the bimodal pattern via two new measures of bimodality, and uses a decomposition analysis to discuss the pattern’s causes.

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References

  1. Barber, J.S. 2000. “Intergenerational Influences on the Entry into Parenthood: Mothers’ Preferences for Family and Nonfamily Behavior.” Social Forces 79:319-48.CrossRefGoogle Scholar
  2. — 2001. “The Intergenerational Transmission of Age at First Birth Among Married and Unmarried Men and Women.” Social Science Research 30:219-47.CrossRefGoogle Scholar
  3. Barber, J.S. and W.G. Axinn. 1998. “The Impact of Parental Pressure for Grandchildren on Young People’s Entry into Cohabitation and Marriage.” Population Studies 52:129-44.CrossRefGoogle Scholar
  4. Bloom, D.E. 1982. “What’s Happening to the Age at First Birth in the United States? A Study of Recent Cohorts.” Demography 19:351-70.CrossRefGoogle Scholar
  5. Bongaarts, J. 2002. “The End of the Fertility Transition in the Developed World.” Population and Development Review 28:419-43.Google Scholar
  6. Bongaarts, J. and G. Feeney. 1998. “On the Quantum and Tempo of Fertility.” Population and Development Review 24:271-90.Google Scholar
  7. Bumpass, L.L., R.R. Rindfuss, and R.B. Janosik. 1978. “Age and Marital Status at First Birth and the Pace of Subsequent Fertility.” Demography 15:75-86.CrossRefGoogle Scholar
  8. Chen, R. and S.P. Morgan. 1991. “Recent Trends in the Timing of First Births in the United States.” Demography 28:513-33.CrossRefGoogle Scholar
  9. DiMaggio, P., J. Evans, and B. Bryson. 1996. “Have Americans’ Social Attitudes Become More Polarized?” American Journal of Sociology 102:690-755.CrossRefGoogle Scholar
  10. Downey, D.J. and M.L. Huffman. 2001. “Attitudinal Polarization and Trimodal Distributions: Measurement Problems and Theoretical Implications.” Social Science Quarterly 82:494-505.Google Scholar
  11. East, P.L. 1998. “Racial and Ethnic Differences in Girls’ Sexual, Marital, and Birth Expectations.” Journal of Marriage and the Family 60:150-62.CrossRefGoogle Scholar
  12. Edwards, M.E. 2002. “Education and Occupations: Reexamining the Conventional Wisdom About Later First Births Among American Mothers.” Sociological Forum 17:423-43.CrossRefGoogle Scholar
  13. Kohler, H.P., F.C. Billari, and J.A. Ortega. 2002. “The Emergence of Lowest-Low Fertility in Europe During the 1990s.” Population and Development Review 28:641-80.CrossRefGoogle Scholar
  14. Kohler, H.P. and J.A. Ortega. 2002. “Tempo-Adjusted Period Parity Progression Measures, Fertility Postponement and Completed Cohort Fertility.” Demographic Research 6:92-144.Google Scholar
  15. Knodel, J. 1977. “Family Limitation and the Fertility Transition: Evidence From the Age Patterns of Fertility in Europe and Asia.” Population Studies 31:219-49.CrossRefGoogle Scholar
  16. — 1983. “Natural Fertility: Age Patterns, Levels, and Trends.” Pp. 61-102 in Determinants of Fertility in Developing Countries: Volume 1. Supply and Demand for Children, edited by R.A. Bulatao and R.D. Lee. New York: Academic Press.Google Scholar
  17. Luker, K. 1996. Dubious Conceptions: The Politics of Teenage Pregnancy. Cambridge, MA: Harvard University Press.Google Scholar
  18. Mahaffy, K.A. and S.K. Ward. 2002. “The Gendering of Adolescents’ Childbearing and Educational Plans: Reciprocal Effects and the Influence of Social Context.” Sex Roles 46:403-17.CrossRefGoogle Scholar
  19. Manning, W.D. 1995. “Cohabitation, Marriage, and Entry Into Motherhood.” Journal of Marriage and the Family 57:191-200.CrossRefGoogle Scholar
  20. Martin, S.P. 2000. “Diverging Fertility Among U.S. Women Who Delay Childbearing Past Age 30.” Demography 37:523-33.CrossRefGoogle Scholar
  21. Miller, B.C. and T.B. Heaton. 1991. “Age at First Sexual Intercourse and the Timing of Marriage and Childbirth.” Journal of Marriage and the Family 53:719-32.Google Scholar
  22. Morgan, S.P. 1996. “Characteristic Features of Modern American Fertility.” Pp. 19-63 in Fertility in the United States: New Patterns, New Theories, edited by J.B. Casterline, R.D. Lee, and K.A. Foote. New York: Population Council.Google Scholar
  23. National Center for Health Statistics (NCHS). 1980–1999. Vital Statistics of the United States, Volume I, Natality. Hyattsville, MD: National Center for Health Statistics. Available on-line at http://www.cdc.gov/nchs/products/pubs/pubd/vsus/vsus.htmGoogle Scholar
  24. National Center for Health Statistics (NCHS). 1990, 1992, 1994, 1995, 1998, 2000, and 2002. Natality Detail File. Available on-line at http://www.nber.org/data/natality.html and http://webapp.icpsr.umich.edu/cocoon/ICPSR-SERIES/ 00036.xmlGoogle Scholar
  25. Ni Bhrolchain, M. 1992. “Period Paramount? A Critique of the Cohort Approach to Fertility.” Population and Development Review 18:599-629.Google Scholar
  26. Powers, D.A. 1993. “Alternative Models of the Effects of Family Structure on Early Family Formation.” Social Science Research 22:283-99.CrossRefGoogle Scholar
  27. R Development Core Team. 2004. R: A Language and Environment for Statistical Computing, Version 1.9. R Foundation for Statistical Computing, Vienna Austria. Available on-line at http:// www.R-project.orgGoogle Scholar
  28. Rindfuss, R.R., S.P. Morgan, and K. Offut. 1996. “Education and the Changing Age Pattern of American Fertility: 1963–1989.” Demography 33:277-90.CrossRefGoogle Scholar
  29. Rindfuss, R.R., S.P. Morgan, and C.G. Swicegood. 1984. “The Transition to Motherhood: The Intersection of Structural and Temporal Dimensions.” American Sociological Review 49:359-72.CrossRefGoogle Scholar
  30. —. 1988. First Births in America: Changes in the Timing of Parenthood. Berkeley: University of California Press.Google Scholar
  31. Rindfuss, R.R. and C. St. John. 1983. “Social Determinants of Age at First Birth.” Journal of Marriage and the Family 45:553-65.CrossRefGoogle Scholar
  32. Ryder, N.B. 1965. “The Cohort as a Concept in the Study of Social Change.” American Sociological Review 30:843-61.CrossRefGoogle Scholar
  33. — 1980. “Components of Temporal Variations in American Fertility.” Pp. 15-54 in Demographic Patterns in Developed Societies, edited by R.W. Hiorns. London: Taylor and Francis.Google Scholar
  34. Skirbekk, V., H.P. Kohler, and A. Prskawetz. 2004. “Birth Month, School Graduation, and the Timing of Births and Marriages.” Demography 41:547-68.CrossRefGoogle Scholar
  35. Sweet, J.A. and L.L. Bumpass. 1996. “The National Survey of Families and Households-Waves 1 and 2: Data Description and Documentation.” Available on-line at http://www.ssc.wisc.edu.nsfh/ home.htmGoogle Scholar
  36. Teachman, J.D. 1985. “Historical and Subgroup Variations in the Association Between Marriage and First Childbirth: A Life-Course Perspective.” Journal of Family History 10:379-401.CrossRefGoogle Scholar
  37. Teachman, J.D. and K.A. Polonko. 1985. “Timing of the Transition to Parenthood: A Multidimensional Birth-Interval Approach.” Journal of Marriage and the Family 47:867-79.CrossRefGoogle Scholar
  38. Teachman, J.D. and P.T. Schollaert. 1989. “Economic Conditions, Marital Status, and the Timing of First Births: Results for Whites and Blacks.” Sociological Forum 4:27-46.Google Scholar
  39. U.S. Census Bureau. 1990, 1992, 1994, 1995, 1998, 2000, and 2002. Current Population Survey, June. Available on-line at http://www.nber.org/cps/ and http://dataferrett.census.gov/ TheDataWeb/index.htmlGoogle Scholar
  40. Wilkie, J.R. 1981. “The Trend Toward Delayed Parenthood.” Journal of Marriage and the Family 43:583-91.CrossRefGoogle Scholar
  41. Wilmoth, J.R. 2005. “On the Relationship Between Period and Cohort Fertility.” Unpublished manuscript. Department of Demography, University of California, Berkeley.Google Scholar
  42. Wu, L.L, L.L Bumpass, and K. Musick. 2001. “Historical and Life Course Trajectories of Nonmarital Childbearing.” Pp. 3-48 in Out of Wedlock: Causes and Consequences of Nonmarital Fertility, edited by L.L Wu and B. Wolfe. New York: Russell Sage Foundation.Google Scholar

Copyright information

© Population Association of America 2005

Authors and Affiliations

  • Rachel Sullivan
    • 1
  1. 1.Graduate Group in Sociology and DemographyUniversity of California, BerkeleyBerkeley

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