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Table 5 Sample multi-day drug exposures for a single patient containing reversed start and end dates

From: Data quality considerations for evaluating COVID-19 treatments using real world data: learnings from the National COVID Cohort Collaborative (N3C)

Drug exposure start date

Drug exposure end date

2020-11-23

2020-11-24

2020-11-24

2020-11-23

2020-11-24

2020-11-27