ADHD medication discontinuation and non-adherence: a Norwegian population-based register study - Takeaways - MDSpire

ADHD medication discontinuation and non-adherence: a Norwegian population-based register study

  • By

  • Miguel Garcia-Argibay

  • Tore Hofstad

  • Ingvar Bjelland

  • Samuele Cortese

  • Arnstein Mykletun

  • June 22, 2026

  • 0 min

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  • 1

    A cohort of 8961 Norwegian youth diagnosed with ADHD was analyzed for medication initiation, discontinuation, and adherence patterns.

  • 2

    74.3% of participants initiated ADHD medication, with a median time from diagnosis to initiation of 106 days.

  • 3

    Discontinuation rates increased significantly with age, with adolescents aged 15-17 years discontinuing treatment 31.9 days earlier than younger children.

  • 4

    Females discontinued ADHD medication significantly earlier than males, with a difference of 13.2 days in the first year.

  • 5

    Longitudinal analysis indicated that older age at initiation and female sex were linked to a steeper decline in medication adherence over time.

Original Source(s)

ADHD medication discontinuation and non-adherence: a Norwegian population-based register study

  • by Miguel Garcia-Argibay, Tore Hofstad, Ingvar Bjelland, Samuele Cortese, Arnstein Mykletun

  • June 22, 2026

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