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Distribution of oral corticosteroid (OCS) users during the study period. High OCS users are defined as having a cumulative dosage ≥450 mg within 90 days (average daily OCS dosage ≥5 mg); low OCS users were prescribed OCS, but did not meet high OCS criteria; non-OCS users had no OCS prescription during the entire follow-up period. GPs: general physicians.
