Find an article that contains the results of a survey, an observational study or an experiment. Attach a copy of the article to your hand-in. For your write-up please give an overview of the data. What was the purpose of the data? What were the main results? Do you think that the conclusions were valid based on the information given in the article? If not, why not? If you could ask the investigators one question so you could better understand the data, what would the question be?