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If there's a confounding variable, it's likely that it is affected by retirement. For instance, a high protein intake in someone who's fifty might signify junk-
by bencollier49 13y ago
If there's a confounding variable, it's likely that it is affected by retirement. For instance, a high protein intake in someone who's fifty might signify junk-food lunches, whereas the same thing in a retired person might be a sign of a more affluent lifestyle in general.
I suspect that there are confounding variables at work.
- bencollier49 13y agoAlso, given that they only chose one day on which to sample, it could be something as kooky as Catholics eating fish on a Friday and being regularly exposed to aromatic hydrocarbons from incense. The possibilities are virtually endless.