Journal of Cancer Survivorship

, Volume 7, Issue 2, pp 247–252 | Cite as

The association between television watching time and all-cause mortality after breast cancer

  • Stephanie M. George
  • Ashley W. Smith
  • Catherine M. Alfano
  • Heather R. Bowles
  • Melinda L. Irwin
  • Anne McTiernan
  • Leslie Bernstein
  • Kathy B. Baumgartner
  • Rachel Ballard-Barbash
Article

Abstract

Purpose

Sedentary time is a rapidly emerging independent risk factor for mortality in the general population, but its prognostic effect among cancer survivors is unknown. In a multiethnic, prospective cohort of breast cancer survivors, we hypothesized that television watching time would be independently associated with an increased risk of death from any cause.

Methods

The Health, Eating, Activity, and Lifestyle Study cohort included 687 women diagnosed with local or regional breast cancer. On average 30 (±4) months postdiagnosis, women completed self-report assessments on time spent sitting watching television/videos in a typical day in the previous year. Multivariate Cox proportional hazards models were used to estimate hazard ratios (HR) and 95 % confidence intervals (CI) for death from any cause (n = 89) during the 7 years of follow-up.

Results

Television time (top tertile vs. bottom tertile) was positively related to risk of death (HR, 1.94; 95 % CI, 1.02, 3.66, ptrend = 0.024), but the association was attenuated and not statistically significant after adjustment for aerobic moderate-vigorous intensity physical activity (HR, 1.70; 95 % CI, 0.89, 3.22, ptrend = 0.14) and all covariates (HR, 1.39; 95 % CI, 0.69, 2.82, ptrend = 0.48).

Conclusion

In this first published investigation on this topic, we did not observe a statistically significant multivariate-adjusted association between television watching time and risk of death among women diagnosed with breast cancer.

Implications for cancer survivors

These results begin an evidence base on this topic that can be built upon to inform lifestyle recommendations for this expanding, aging population.

Keywords

Sedentary behavior Exercise Breast neoplasm Mortality Physical activity 

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Copyright information

© Springer Science+Business Media New York (outside the USA)  2013

Authors and Affiliations

  • Stephanie M. George
    • 1
    • 7
  • Ashley W. Smith
    • 1
  • Catherine M. Alfano
    • 2
  • Heather R. Bowles
    • 1
  • Melinda L. Irwin
    • 3
  • Anne McTiernan
    • 4
  • Leslie Bernstein
    • 5
  • Kathy B. Baumgartner
    • 6
  • Rachel Ballard-Barbash
    • 1
  1. 1.Applied Research Program, Division of Cancer Control and Population SciencesNational Cancer InstituteBethesdaUSA
  2. 2.Office of Cancer Survivorship, Division of Cancer Control and Population SciencesNational Cancer InstituteBethesdaUSA
  3. 3.Department of Chronic Disease EpidemiologyYale School of Public HealthNew HavenUSA
  4. 4.Division of Public Health SciencesFred Hutchinson Cancer Research CenterSeattleUSA
  5. 5.Department of Population SciencesCity of Hope Medical Center and Beckman Research CenterDuarteUSA
  6. 6.Department of Epidemiology and Population HealthUniversity of LouisvilleLouisvilleUSA
  7. 7.BethesdaUSA

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