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The data are artificial and do not correspond to real patients.




A data.table with the following columns:

  • person_id: Character vector of the identifier for each person

  • icd: Character vector of the ICD codes recorded for each person

  • flag: Integer vector of the vocabulary of the ICD code (9: ICD-9-CM, 10: ICD-10-CM)

  • entry_date: Vector of type Date indicating the date each ICD code was recorded.