On: Dog ownership is associated with better cardiovasc...

[maheart]

The article seems to indicate that they established a socio-economic baseline: "The study first established baseline health and socio-economic information on more than 2,000 subjects"

[deepsun → maheart]

Ok, let's detach it from money. Something like "healthy people are more likely to have time for dogs".

My point is correlation != causation.