Television Viewing Time and Breast Cancer Incidence for Japanese Premenopausal and Postmenopausal Women: The JACC Study

The evidence on effects of TV viewing time among premenopausal and postmenopausal women for breast cancer risk remains controversial and limited. A prospective study encompassing 33,276 (17,568 premenopausal, and 15,708 postmenopausal) women aged 40-79 years in whom TV viewing time, menstrual, and r...

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Published in:Cancer research and treatment 2019, 51(4), , pp.1509-1517
Main Authors: Cao, Jinhong, Eshak, Ehab Salah, Liu, Keyang, Muraki, Isao, Cui, Renzhe, Iso, Hiroyasu, Tamakoshi, Akiko
Format: Article
Language:English
Subjects:
Adult
Aged
Body Mass Index
Breast Neoplasms - epidemiology
Breast Neoplasms - etiology
Female
Health Education
Humans
Incidence
Japan - epidemiology
Middle Aged
Original
Postmenopause
Premenopause
Proportional Hazards Models
Prospective Studies
Self Report
Television
Time Factors
Women's Health
의약학
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cited_by cdi_FETCH-LOGICAL-c528t-2b66d056e8269f8901089f41167411d9beabe5c4c2c49af42ced3b6da6658c643
cites cdi_FETCH-LOGICAL-c528t-2b66d056e8269f8901089f41167411d9beabe5c4c2c49af42ced3b6da6658c643
container_end_page 1517
container_issue 4
container_start_page 1509
container_title Cancer research and treatment
container_volume 51
creator Cao, Jinhong
Eshak, Ehab Salah
Liu, Keyang
Muraki, Isao
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Iso, Hiroyasu
Tamakoshi, Akiko
description The evidence on effects of TV viewing time among premenopausal and postmenopausal women for breast cancer risk remains controversial and limited. A prospective study encompassing 33,276 (17,568 premenopausal, and 15,708 postmenopausal) women aged 40-79 years in whom TV viewing time, menstrual, and reproductive histories were determined by a self-administered questionnaire. The follow-up was from 1988 to 2009 and hazard ratios (HRs) with 95% confidence intervals (CIs) of breast cancer incidence were calculated for longer TV viewing time in reference to shorter TV viewing time by Cox proportional hazard models. During 16.8-year median follow-up, we found positive associations between TV viewing time and breast cancer incidence with a borderline significant trend among total women and a significant trend among postmenopausal women. Among total women, the multivariable HRs (95% CIs) for risk of breast cancer in reference to < 1.5 hr/day of TV viewing time were 0.89 (0.59-1.34) for 1.5 to < 3.0 hr/day, 1.19 (0.82-1.74) for 3.0 to < 4.5 hr/day, and 1.45 (0.91-2.32) for ≥ 4.5 hr/day (p for trend=0.053) and among postmenopausal women, the corresponding risk estimates were 1.10 (0.42-2.88), 2.54 (1.11-5.80), and 2.37 (0.92-6.10) (p for trend=0.009), respectively. Prolonged TV viewing time was associated with increased risk of breast cancer, especially among postmenopausal women.
doi_str_mv 10.4143/crt.2018.705
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Among total women, the multivariable HRs (95% CIs) for risk of breast cancer in reference to &lt; 1.5 hr/day of TV viewing time were 0.89 (0.59-1.34) for 1.5 to &lt; 3.0 hr/day, 1.19 (0.82-1.74) for 3.0 to &lt; 4.5 hr/day, and 1.45 (0.91-2.32) for ≥ 4.5 hr/day (p for trend=0.053) and among postmenopausal women, the corresponding risk estimates were 1.10 (0.42-2.88), 2.54 (1.11-5.80), and 2.37 (0.92-6.10) (p for trend=0.009), respectively. 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subjects Adult
Aged
Body Mass Index
Breast Neoplasms - epidemiology
Breast Neoplasms - etiology
Female
Health Education
Humans
Incidence
Japan - epidemiology
Middle Aged
Original
Postmenopause
Premenopause
Proportional Hazards Models
Prospective Studies
Self Report
Television
Time Factors
Women's Health
의약학
title Television Viewing Time and Breast Cancer Incidence for Japanese Premenopausal and Postmenopausal Women: The JACC Study
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