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Re:Association Between Sauna Bathing and All-Cause Mortality... by pacaro on Wednesday February 25, 2015 @02:05PM (#9108780)
Given that the study was conducted in Finland, it's unlikely that wealth is a confounding factor in sauna usage.
Re:Association Between Sauna Bathing and All-Cause Mortality... by eloff on Wednesday February 25, 2015 @02:23PM (#9108902)
The effect was only noticeable with sauna usage 4-7 times a week, more than wealth that implies free time, which implies lower stress (a risk factor) and, to a degree, wealth.