4 ms·
Are you commenting in disregard of this paragraph near the top of the submitted article? "In this case, the study population was not randomly assigned to eat mo
by tokenadult 12y ago
Are you commenting in disregard of this paragraph near the top of the submitted article? "In this case, the study population was not randomly assigned to eat more whole grains, which means we can't know whether the people who ate them are healthier because of their diet or because of other traits they share, like their age, ethnicity, smoking status, alcohol intake, physical activity levels, multivitamin use, and family medical history."
- gwern 12y agoNope. Notice that none of those is healthy user bias - age != healthy user bias, smoking != healthy user bias, and so on. Smoking and multivitamin use may reflect it, but there's a big difference between mentioning a few confounders and pointing out a major confound that could not just explain the result entirely but also explain why nutrition results have been and will be systematically wrong.