Description
Date of the beginning of the enrollment period. If the exact date is unknown, use the first day of the month. Enr_Start should not be before January 1, 2000. Note: Adjacent and overlapping enrollment periods with the same PatID, Enr_Start, Enr_End, MedCov, DrugCov, and Chart values should be collapsed. Enrollment periods separated by more than one day should not be bridged. For example, an Enr_End date of 1/31/2005 should be bridged with an Enr_Start date of 2/1/2005, but should not be bridged with an Enr_Start date of 2/2/2005.
Data type
date
Alias
- UMLS CUI [1]
- C0808070