Go to a website for an online medical journal, such as British Medical Journal (www.bmj.com). Pick an article in a recent issue.
a. Was the study an experiment or an observational study?
b. Identify the response variable and the primary explanatory variable(s).
c. Describe any randomization or control conducted in the study as well as attempts to take into account lurking variables.
d. Summarize conclusions of the study. Do you see any limitations of the study?