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This study found that the linkage of patients' clinical trial data to routinely collected data has been implemented in several trials for various use cases and that most studies obtained consent for linkage prospectively as part of the main trial or received a waiver of authorization from ethical review boards. These findings demonstrate the feasibility and provide an overview of the use cases for linking trials to routinely collected data.
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Najafzadeh et al. (2025) studied this question.
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