Television Viewing Time and Breast Cancer Incidence for Japanese Premenopausal and Postmenopausal Women: The JACC Study / Journal of the Korean Cancer Association, 대한암학회지
Cancer Research and Treatment
; : 1509-1517, 2019.
Article
in English
| WPRIM (Western Pacific)
| ID: wpr-763210
Responsible library:
WPRO
ABSTRACT
PURPOSE:
The evidence on effects of TV viewing time among premenopausal and postmenopausal women for breast cancer risk remains controversial and limited. MATERIALS ANDMETHODS:
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.RESULTS:
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.CONCLUSION:
Prolonged TV viewing time was associated with increased risk of breast cancer, especially among postmenopausal women.
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Television
/
Breast
/
Breast Neoplasms
/
Body Mass Index
/
Proportional Hazards Models
/
Incidence
/
Prospective Studies
/
Cohort Studies
/
Follow-Up Studies
/
Reproductive History
Type of study:
Etiology study
/
Incidence study
/
Observational study
/
Prognostic study
/
Risk factors
Limits:
Female
/
Humans
Country/Region as subject:
Asia
Language:
English
Journal:
Cancer Research and Treatment
Year:
2019
Document type:
Article