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dc.contributor.authorWidding-Havneraas, Tarjei
dc.contributor.authorMarkussen, Simen
dc.contributor.authorElwert, Felix
dc.contributor.authorLyhmann, Ingvild
dc.contributor.authorBjelland, Ingvar
dc.contributor.authorHalmøy, Anne
dc.contributor.authorChaulagain, Ashmita
dc.contributor.authorYstrøm, Eivind
dc.contributor.authorMykletun, Arnstein
dc.contributor.authorZachrisson, Henrik Daae
dc.date.accessioned2022-08-04T12:42:16Z
dc.date.available2022-08-04T12:42:16Z
dc.date.issued2022-05-18
dc.description.abstractRates of ADHD diagnosis vary across regions in many countries. However, no prior study has investigated how much within-country geographic variation in ADHD diagnoses is explained by variation in ADHD symptom levels. We examine whether ADHD symptom levels explain variation in ADHD diagnoses among children and adolescents using nationwide survey and register data in Norway. Geographical variation in incidence of ADHD diagnosis was measured using Norwegian registry data from the child and adolescent mental health services for 2011–2016. Geographical variation in ADHD symptom levels in clinics’ catchment areas was measured using data from the Norwegian mother, father and child cohort study for 2011–2016 (n = 39,850). Cross-sectional associations between ADHD symptom levels and the incidence of ADHD diagnoses were assessed with fractional response models. Geographical variation in ADHD diagnosis rates is much larger than what can be explained by geographical variation in ADHD symptoms levels. Treatment in the Norwegian child and adolescent mental health services is free, universally available upon referral, and practically without competition from the private sector. Factors beyond health care access and unequal symptom levels seem responsible for the geographical variation in ADHD diagnosis.en_US
dc.identifier.citationWidding-Havneraas T, Markussen S, Elwert F, Lyhmann I, Bjelland I, Halmøy A, Chaulagain A, Ystrøm E, Mykletun A, Zachrisson HD. Geographical variation in ADHD: do diagnoses refect symptom levels?. European Child and Adolescent Psychiatry. 2022en_US
dc.identifier.cristinIDFRIDAID 2038771
dc.identifier.doi10.1007/s00787-022-01996-7
dc.identifier.issn1018-8827
dc.identifier.issn1435-165X
dc.identifier.urihttps://hdl.handle.net/10037/25964
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.relation.journalEuropean Child and Adolescent Psychiatry
dc.relation.projectIDNorges forskningsråd: 288585en_US
dc.relation.projectIDERC-European Research Council: 818425en_US
dc.relation.projectIDHelse Vest RHF: 912197en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/818425/Norway/Socioeconomic gaps in language development and school achievement: Mechanisms of inequality and opportunity/EQOP/en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)en_US
dc.titleGeographical variation in ADHD: do diagnoses refect symptom levels?en_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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