Open AccessTelevision Viewing, Computer Use, Time Driving and All‐Cause Mortality: The SUN Cohort
Author(s) -
BasterraGortari Francisco Javier,
BesRastrollo Maira,
Gea Alfredo,
NúñezCórdoba Jorge María,
Toledo Estefanía,
MartínezGonzález Miguel Ángel
Publication year - 2014
Publication title -
journal of the american heart association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.494
H-Index - 85
ISSN - 2047-9980
DOI - 10.1161/jaha.114.000864
Subject(s) - poisson regression , demography , medicine , confidence interval , body mass index , cohort , cohort study , rate ratio , prospective cohort study , mortality rate , relative risk , incidence (geometry) , proportional hazards model , screen time , gerontology , physical activity , physical therapy , environmental health , population , physics , sociology , optics
Background Sedentary behaviors have been directly associated with all‐cause mortality. However, little is known about different types of sedentary behaviors in relation to overall mortality. Our objective was to assess the association between different sedentary behaviors and all‐cause mortality. Methods and Results In this prospective, dynamic cohort study (the SUN Project) 13 284 Spanish university graduates with a mean age of 37 years were followed‐up for a median of 8.2 years. Television, computer, and driving time were assessed at baseline. Poisson regression models were fitted to examine the association between each sedentary behavior and total mortality. All‐cause mortality incidence rate ratios ( IRR s) per 2 hours per day were 1.40 (95% confidence interval ( CI ): 1.06 to 1.84) for television viewing, 0.96 (95% CI : 0.79 to 1.18) for computer use, and 1.14 (95% CI : 0.90 to 1.44) for driving, after adjustment for age, sex, smoking status, total energy intake, Mediterranean diet adherence, body mass index, and physical activity. The risk of mortality was twofold higher for participants reporting ≥3 h/day of television viewing than for those reporting <1 h/d ( IRR : 2.04 [95% CI 1.16 to 3.57]). Conclusions Television viewing was directly associated with all‐cause mortality. However, computer use and time spent driving were not significantly associated with higher mortality. Further cohort studies and trials designed to assess whether reductions in television viewing are able to reduce mortality are warranted. The lack of association between computer use or time spent driving and mortality needs further confirmation.