http://www.dailymail.co.uk/health/artic ... geing.html
http://www.nhs.uk/news/2013/01January/P ... laims.aspx
Moderators: JeffN, f1jim, John McDougall, carolve, Heather McDougall
Looking at weight at a single point in time, like almost all obesity studies do, misses the fact that low weight can be a sign that something is wrong—that is, sometimes people are slim because they have a serious illness such as heart disease or cancer. To epidemiologists, this bias is known as confounding by illness or reverse causality.
Users browsing this forum: No registered users and 9 guests