alt Hacker NewsHow are we sure about the direction of cause and effect here? I'd expect more healthier people to self-select the working cohort, all else being equal.
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amanaplanacanal • today at 5:24 PM
Yeah this seems like an obvious confounder.
How are we sure about the direction of cause and effect here? I'd expect more healthier people to self-select the working cohort, all else being equal.
Yeah this seems like an obvious confounder.
In practice it doesn't really work that way. It isn't like "I am ill bodied, I ought to retire." It is more like "I am ill bodied, but I can't afford to retire, so I must work in some capacity." People who retire early are probably far more likely to be wealthier, and that is correlated with healthspan.