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The Quantified Behavioral Test Failed to Differentiate ADHD in Adolescents With Neurodevelopmental Problems.

Journal article
Authors Viktoria Johansson
Eva Norén Selinus
Ralf Kuja-Halkola
Sebastian Lundström
Natalie Durbeej
Henrik Anckarsäter
Paul Lichtenstein
Clara Hellner
Published in Journal of attention disorders
Pages 1087054718787034
ISSN 1557-1246
Publication year 2018
Published at Institute of Neuroscience and Physiology
Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry
Gillberg Neuropsychiatry Centre
Centre for Ethics, Law, and Mental Health
Pages 1087054718787034
Language en
Links dx.doi.org/10.1177/1087054718787034
www.ncbi.nlm.nih.gov/entrez/query.f...
Keywords ADHD; assessment; diagnostic validity; intelligence; neurodevelopment
Subject categories Psychiatry

Abstract

The Quantified Behavioral Test (QbTest) is a computerized diagnostic test for ADHD, used in clinical psychiatric care, but its validity may be questioned. We analyzed the QbTest's diagnostic validity and its relation to cognitive ability and psychosocial factors in an adolescent population with a high occurrence of neurodevelopmental disorders.In total, 340 participants aged 15 years, completed the QbTest, along with questionnaires, clinical and intelligence quotient (IQ) assessments.The clinical assessment resulted in 89 (26%) participants with ADHD. Area under curve (AUC) scores indicated a random to poor validity of the QbTest (AUC range = 0.48-0.64). QbTest scores of inattention and impulsivity correlated with IQ.The QbTest was insufficient as a diagnostic test for ADHD, and was not able to differentiate ADHD from other neurodevelopmental conditions. Clinicians should be aware of the dubious discriminating power of the QbTest.

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