I subscribe to Marion Nestle's blog and read as many posts as time permits. When she recommends a resource, I pay attention. (She has very impressive credentials.) Yesterday, in her post titled "Does Nutritional Epidemiology Work?", she suggested reading this "thoughtful" [Marion's word] article on epidemiology. After reading the piece, I decided I needed to review my notes from DC's Evidence-Based Decision-making course. These, unfortunately, are in my office at work and I am currently on vacation.
So because I don't have ready access to my notes, I'm in the process of compiling some resources and processes for dietitians to use when evaluating epidemiologic studies. Doing this will be a good review for me, too. I'll try to get these up within the next couple of days. In the meantime, you may want to read the article. It is 9 pages so you will need to set aside a chunk of time for reading and reflecting.