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Erlotinib real-world evidence and retrospective analyses

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After clinical trials, it is important to understand how effective and safe drugs are in clinical practice. Real-world evidence provides insight into how drugs perform in a wider range of patients, with more comorbidities and a more diverse medical history than those patients enrolled in clinical trials.

Retrospective studies help to formulate hypotheses about possible associations between an outcome and an exposure to form the basis for further investigation of the relationship.