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Published in:

01-06-2013

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

Authors: 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

Published in: Journal of Cancer Survivorship | Issue 2/2013

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, p _trend = 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, p _trend = 0.14) and all covariates (HR, 1.39; 95 % CI, 0.69, 2.82, p _trend = 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.

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Title: The association between television watching time and all-cause mortality after breast cancer
Authors: 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
Publication date: 01-06-2013
Publisher: Springer US
Published in: Journal of Cancer Survivorship / Issue 2/2013
Print ISSN: 1932-2259
Electronic ISSN: 1932-2267
DOI: https://doi.org/10.1007/s11764-013-0265-y

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Abstract

Purpose

Methods

Results

Conclusion

Implications for cancer survivors

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