The International ADHD in Substance Use Disorders Prevalence (IASP) study: Background, methods and study population

Geurt van de Glind, Katelijne van Emmerik-van Oortmerssen, Pieter-Jan Carpentier, Frances R. Levin, Maarten W J Koeter, Csaba Barta, Sharlene Kaye, Arvid Skutle, Johan Franck, Maija Konstenius, Eli-Torild Bu, Franz Moggi, Geert Dom, Zolt Demetrovics, Mélina Fatséas, Arild Schillinger, Máté Kapitány-Fövény, Sofie Verspreet, Andrea Seitz, Brian Johnson & 24 others Stephen V. Faraone, J. Antoni Ramos-Quiroga, Steve Allsop, Susan Carruthers, Robert A. Schoevers, Eva Karin Løvaas, Kari Lossius, Anneke van Wamel, Geert Bosma, David Hay, Sara Wallhed, Marc Auriacombe, Marion Malivert, Romain Debrabant, Therese Dahl, Miguel Casas, Constanza Daigre, Rutger Jan van der Gaag, Atul Beniwal, Louisa Degenhardt, Joanne Cassar, Jesse Young, Merete Möller, Wim van den Brink

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Attention deficit/hyperactivity disorder (ADHD) is an increasingly recognized comorbid condition in subjects with substance use disorders (SUDs). This paper describes the methods and study population of the International ADHD in Substance Use Disorders Prevalence (IASP) study. Objectives of the IASP are to determine the prevalence of ADHD in adult treatment seeking patients with SUD in different countries and SUD populations, determine the reliability and validity of the Adult ADHD Self-report Scale V 1.1 (ASRS) as ADHD screening instrument in SUD populations, investigate the comorbidity profile of SUD patients with and without ADHD, compare risk factors and protective factors in SUD patients with and without a comorbid diagnosis of ADHD, and increase our knowledge about the relationship between ADHD and the onset and course of SUD. In this cross-sectional, multi-centre two stage study, subjects were screened for ADHD with the ASRS, diagnosed with the Conner's Adult ADHD Diagnostic Interview for DSM-IV (CAADID), and evaluated for SUD, major depression, bipolar disorder, anti social personality disorder and borderline personality disorder. Three thousand five hundred and fifty-eight subjects from 10 countries were included. Of these 40.9% screened positive for ADHD. This is the largest international study on this population evaluating ADHD and comorbid disorders.
Original languageEnglish
Pages (from-to)232-244
Number of pages13
JournalInternational Journal of Methods in Psychiatric Research
Issue number3
Publication statusPublished - Sep 2013
Externally publishedYes


Cite this

van de Glind, G., van Emmerik-van Oortmerssen, K., Carpentier, P-J., Levin, F. R., Koeter, M. W. J., Barta, C., ... van den Brink, W. (2013). The International ADHD in Substance Use Disorders Prevalence (IASP) study: Background, methods and study population. International Journal of Methods in Psychiatric Research, 22(3), 232-244.