A great example of differential misclassification bias that was a criticism of the secondhand smoke epidemiology — i.e., smokers pretending they were nonsmokers. Here’s a quantification of the effect. Wow… More than 40% of those 822 self-reported quitters failed the saliva test. The media release is below. ### Smokers in clinical studies who say they’ve … Continue reading Study: Smokers in clinical studies who say they’ve quit often haven’t
via JunkScience.com
August 23, 2017 at 09:07AM
Iowa Climate Science Education 