PMCCPMCCPMCC

Search tips
Search criteria 

Advanced

 
Logo of bmcphBioMed Centralsearchsubmit a manuscriptregisterthis articleBMC Public Health
 
BMC Public Health. 2012; 12: 70.
Published online Jan 23, 2012. doi:  10.1186/1471-2458-12-70
PMCID: PMC3398267
Combined television viewing and computer use and mortality from all-causes and diseases of the circulatory system among adults in the United States
Earl S Fordcorresponding author1,2
1Division of Adult and Community Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA, USA
2Centers for Disease Control and Prevention, 4770 Buford Highway, MS K67, Atlanta, GA 30341, USA
corresponding authorCorresponding author.
Earl S Ford: eford/at/cdc.gov
Received September 7, 2011; Accepted January 23, 2012.
Abstract
Background
Watching television and using a computer are increasingly common sedentary behaviors. Whether or not prolonged screen time increases the risk for mortality remains uncertain.
Methods
Mortality for 7,350 adults aged ≥ 20 years who participated in the National Health and Nutrition Examination Survey during 1999-2002 and were followed through 2006 was examined. Participants were asked a single question about the amount of time they spent watching television or videos or using a computer during the past 30 days.
Results
During a median follow-up of 5.8 years, 542 participants died. At baseline, 12.7% of participants reported watching television or using a computer less than 1 h per day, 16.4% did so for 1 h, 27.8% for 2 h, 18.7% for 3 h, 10.9% for 4 h, and 13.5% for 5 or more h. After extensive adjustment, the hazard ratio for all-cause mortality for the top category of exposure was 1.30 (95% confidence interval: 0.82, 2.05). No significant trend across categories of exposure was noted. The amount of screen time was also not significantly related to mortality from diseases of the circulatory system.
Conclusions
In the present study, screen time did not significantly predict mortality from all-causes and diseases of the circulatory system.
Keywords: Mortality, Sedentary lifestyle, Television
Articles from BMC Public Health are provided here courtesy of
BioMed Central