Adherence
Spending 21 or more hours per week watching television is associated with an increased risk of clinical depression compared to watching 0-1 hour per week.
Limit your television watching to less than 5 hours per week to potentially lower your risk of depression. If you watch more than 21 hours a week, your risk increases by about 13%. Replacing some of this sedentary time with physical activity, even just walking, is the recommended strategy.
In contrast, the risk of depression increased with increasing television-watching time. The multivariate relative risk comparing women who spent 21 hours/week or more watching television with those who spent 0–1 hour/week was 1.13 (95% confidence interval: 1.00, 1.27; Ptrend = 0.01).
Why this rating
Same high-quality observational design as N1, but the effect size is smaller and the confidence interval touches 1.0.
Source
Relation Between Clinical Depression Risk and Physical Activity and Time Spent Watching Television in Older Women: A 10-Year Prospective Follow-up Study
Michel Lucas et al. · American Journal of Epidemiology · 2011
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