Modification of breast cancer risk according to age and menopausal status: A combined analysis of five population-based case-control studies

Amy Trentham-Dietz, Brian L. Sprague, John M. Hampton, Diana L. Miglioretti, Heidi D. Nelson, Linda J. Titus, Kathleen M. Egan, Patrick L. Remington, Polly A. Newcomb

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

While several risk factors for breast cancer have been identified, studies have not consistently shown whether these factors operate more strongly at certain ages or for just pre- or postmenopausal women. We evaluated whether risk factors for breast cancer differ according to age or menopausal status. Data from five population-based case-control studies conducted during 1988-2008 were combined and analyzed. Cases (N = 23,959) and population controls (N = 28,304) completed telephone interviews. Logistic regression was used to estimate adjusted odds ratios and 95 % confidence intervals and tests for interaction by age and menopausal status. Odds ratios for first-degree family history of breast cancer were strongest for younger women - reaching twofold elevations - but were still statistically significantly elevated by 58-69 % among older women. Obesity was inversely associated with breast cancer among younger women and positively associated with risk for older women (interaction P < 0.0001). Recent alcohol intake was more strongly related to breast cancer risk among older women, although consumption of 3 or more drinks/day among younger women also was associated with elevated odd ratios (P < 0.0001). Associations with benign breast disease and most reproductive/menstrual factors did not vary by age. Repeating analysis stratifying by menopausal status produced similar results. With few exceptions, menstrual and lifestyle factors are associated with breast cancer risk regardless of age or menopausal status. Variation in the association of family history, obesity, and alcohol use with breast cancer risk by age and menopausal status may need to be considered when determining individual risk for breast cancer.

Original languageEnglish (US)
Pages (from-to)165-175
Number of pages11
JournalBreast Cancer Research and Treatment
Volume145
Issue number1
DOIs
StatePublished - May 2014

Keywords

  • Age factors
  • Alcohol drinking
  • Breast neoplasms
  • Case-control studies
  • Menopause
  • Obesity
  • Risk factors

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

Fingerprint Dive into the research topics of 'Modification of breast cancer risk according to age and menopausal status: A combined analysis of five population-based case-control studies'. Together they form a unique fingerprint.

  • Cite this

    Trentham-Dietz, A., Sprague, B. L., Hampton, J. M., Miglioretti, D. L., Nelson, H. D., Titus, L. J., Egan, K. M., Remington, P. L., & Newcomb, P. A. (2014). Modification of breast cancer risk according to age and menopausal status: A combined analysis of five population-based case-control studies. Breast Cancer Research and Treatment, 145(1), 165-175. https://doi.org/10.1007/s10549-014-2905-y