Transitioning From Pediatric to Adult Psychiatric Care for ADHD in Sweden: A Nationwide Study.

Objective: To evaluate care transition and medication use in young adults with ADHD in Sweden.

Method: Observational retrospective study of patients with ADHD from the Swedish National Patient Register, Prescribed Drug Register, and Cause of Death Register (2018-2020). Last contact with pediatric psychiatric care, first contact with adult psychiatric care, and medication use were described for ages 18 to 21 years, inclusive.

Results: Of 19,233 patients who had dispensed ADHD treatment, 85.8% had received adult psychiatric care by 21 years of age. The proportion of patients on medication was highest at age 18 years (80.1%), decreasing to 36.1% by age 21 years. By 21 years, there were significantly more patients on versus off ADHD medication who had received healthcare for autism, been prescribed selective serotonin re-uptake inhibitors, and received adult psychiatric outpatient visits (all  < .0001).

Conclusion: This study demonstrates declining ADHD medication use during the pediatric-to-adult care transition for patients in Sweden.