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Monitoring Cholesterol Levels: Understanding Variance and Finding the Most Useful Data
TO THE EDITOR:
I read with great interest the article by Glasziou and colleagues (1), which provided useful variance parameters for a simulation study I am currently conducting. I believe the authors made 2 errors, however, and although neither error alters the conclusions of their study, researchers using the reported estimates for other work might come to erroneous conclusions depending …
