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Research Article: Methodological biases in observational hospital studies of COVID-19 treatment effectiveness: pitfalls and potential

Date Published: 2024-03-21

Abstract:
Introduction: This study aims to discuss and assess the impact of three prevalent methodological biases: competing risks, immortal-time bias, and confounding bias in real-world observational studies evaluating treatment effectiveness. We use a demonstrative observational data example of COVID-19 patients to assess the impact of these biases and propose potential solutions.

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