Prevalence of Adolescents’ Persistent High Utilization of Outpatient Healthcare Services and ICD-10 Diagnoses: A Retrospective 4-Year Population-Based Register Study

The continuation from single-year to multi-year HU was relatively high. Thus, single-year high utilization is a strong indicator of future persistence in healthcare service utilization. Further research is needed to identify differences in clinical and psychosocial characteristics between single-year high utilizers and those whose high-utilization continues for years.