Sedentary behaviour and life expectancy in the USA: a cause-deleted life table analysis.
other · Level IV
Where this comes from
- Record sourced from PubMed, PMID 22777603.
- Also identified by DOI 10.1136/bmjopen-2012-000828 and PMC identifier 3400064.
- Licence recorded as CC BY-NC.
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Abstract
To determine the impact of sitting and television viewing on life expectancy in the USA. Prevalence-based cause-deleted life table analysis. Summary RRs of all-cause mortality associated with sitting and television viewing were obtained from a meta-analysis of available prospective cohort studies. Prevalences of sitting and television viewing were obtained from the US National Health and Nutrition Examination Survey. Life expectancy at birth. The estimated gains in life expectancy in the US population were 2.00 years for reducing excessive sitting to <3 h/day and a gain of 1.38 years from reducing excessive television viewing to <2 h/day. The lower and upper limits from a sensitivity analysis that involved simultaneously varying the estimates of RR (using the upper and lower bounds of the 95% CI) and the prevalence of television viewing (±20%) were 1.39 and 2.69 years for sitting and 0.48 and 2.51 years for television viewing, respectively. Reducing sedentary behaviours such as sitting and television viewing may have the potential to increase life expectancy in the USA.