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Persistence of chronic opioid therapy. Kaplan-Meier analyses were conducted to determine persistence of chronic opioid therapy for adolescents and young adults with IBD who filled ≥2 opioid prescriptions in an index year and remained in the database for ≥3 subsequent years. Analyses showed that 30.5% continued to receive chronic opioid therapy in year 2, 10.7% in year 3, and 5.3% in year 4.
