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Maternal age at childbirth and parity as predictors of longevity among women in the United States: The women's health initiative

Author

Listed:
  • Shadyab, A.H.
  • Gass, M.L.S.
  • Stefanick, M.L.
  • Waring, M.E.
  • Macera, C.A.
  • Gallo, L.C.
  • Shaffer, R.A.
  • Jain, S.
  • LaCroix, A.Z.

Abstract

Objectives. To examine associations of maternal age at childbirth and parity with survival to age 90 years (longevity). Methods. We performed a prospective study among a multiethnic cohort of postmenopausal USwomenin theWomen's Health Initiative recruited from 1993 to 1998 and followed through August 29, 2014. We adjusted associations with longevity for demographic, lifestyle, reproductive, and health-related characteristics. Results. Among 20 248 women (mean age at baseline, 74.6 years), 10 909 (54%) survived to age 90 years. The odds of longevity were significantly higher in women with later age at first childbirth (adjusted odds ratio = 1.11; 95% confidence interval = 1.02, 1.21 for age 25 years or older vs younger than 25 years; P for trend = .04). Among parous women, the relationship between parity and longevity was significant among White but not Black women. White women with 2 to 4 term pregnancies compared with 1 term pregnancy had higher odds of longevity. Conclusions. Reproductive events were associated with longevity among women. Future studies are needed to determine whether factors such as socioeconomic status explain associations between reproductive events and longevity.

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  • Shadyab, A.H. & Gass, M.L.S. & Stefanick, M.L. & Waring, M.E. & Macera, C.A. & Gallo, L.C. & Shaffer, R.A. & Jain, S. & LaCroix, A.Z., 2017. "Maternal age at childbirth and parity as predictors of longevity among women in the United States: The women's health initiative," American Journal of Public Health, American Public Health Association, vol. 107(1), pages 113-119.
    • Handle: RePEc:aph:ajpbhl:10.2105/ajph.2016.303503_8
    DOI: 10.2105/AJPH.2016.303503
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