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2min chapter
Immortal Time Bias in Observational Studies With Dr Kabir Yadav
JAMAevidence JAMA Guide to Statistics and Methods
Comparing Randomized Trials and Observational Data for Time to Events
This chapter explores the concept of immortal time bias and how it affects the comparison of time to events in observational studies. Using the example of adverse event prevention in COPD patients, it highlights the misclassification of immortal time in observational studies compared to randomized controlled trials.
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