Is there any reason this isn't just selection bias? Young, healthy, people with ... | Hacker News

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		legitster on May 8, 2017 \| parent \| context \| favorite \| on: U.S. life expectancy varies by more than 20 years ... Is there any reason this isn't just selection bias? Young, healthy, people with good careers travel to big cities. The rest stay behind. Do we have data to compare those who stuck around vs those who grew up there but moved away?

pdubbs90 on May 8, 2017 [–]

The map shows life expectancy at birth, so healthy people moving from rural areas to cities shouldn't effect it.

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