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Causal modelling of variation in clinical practice and long-term outcomes of ADHD using Norwegian registry data: The ADHD controversy project
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-19)
<p><i>Introduction:</i> Attention-deficit/hyperactivity disorder (ADHD) is among the most common mental disorders in children and adolescents, and it is a strong risk factor for several adverse psychosocial outcomes over the lifespan. There are large between-country and within-country variations in diagnosis and medication rates. Due to ethical and practical considerations, a few studies have examined ...
Estimating the Consequences of Norway’s National Scale-Up of Early Childhood Education and Care (Beginning in Infancy) for Early Language Skills
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-02-01)
While most early childhood education and care (ECEC) programs taken to scale in the United States have served socially disadvantaged 3- to 5-years-olds, Norway scaled up universal ECEC from age 1. We investigated the consequences of Norway’s universal ECEC scale-up for children’s early language skills, exploiting variation in ECEC coverage across birth cohorts and municipalities in a population-based ...
Variation in attitudes toward diagnosis and medication of ADHD: a survey among clinicians in the Norwegian child and adolescent mental health services
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-19)
Prevalence and medication rates of ADHD vary geographically, both between and within countries. No absolute cutof exists
between ADHD and normal behavior, making clinician attitudes (leading to local practice cultures) a potential explanation
for the observed variation in diagnosis and medication rates. The objective of this study was to describe variation in attitudes toward diagnosis and medication ...
Effect of Pharmacological Treatment of Attention-Deficit/Hyperactivity Disorder on Criminality
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-27)
Objective: Criminality rates are higher among persons with attention-deficit/hyperactivity disorder (ADHD), and evidence that medication reduces
crime is limited. Medication rates between clinics vary widely even within universal health care systems, partly because of providers’ treatment preferences. We used this variation to estimate causal effects of pharmacological treatment of ADHD on 4-year ...
Effect of ADHD medication on risk of injuries: a preference-based instrumental variable analysis
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-24)
ADHD is associated with an increased risk of injury. Causal evidence for efects of pharmacological treatment on injuries is
scarce. We estimated efects of ADHD medication on injuries using variation in provider preference as an instrumental variable (IV). Using Norwegian registry data, we followed 8051 patients who were diagnosed with ADHD aged 5 to 18 between
2009 and 2011 and recorded their ADHD ...