R
R. de Graaf
Researcher at Utrecht University
Publications - 180
Citations - 14811
R. de Graaf is an academic researcher from Utrecht University. The author has contributed to research in topics: Population & Mental health. The author has an hindex of 55, co-authored 164 publications receiving 13165 citations. Previous affiliations of R. de Graaf include Maastricht University Medical Centre & Maastricht University.
Papers
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Journal ArticleDOI
Cross-national prevalence and correlates of adult attention-deficit hyperactivity disorder
John Fayyad,R. de Graaf,Ronald C. Kessler,Jordi Alonso,Matthias C. Angermeyer,Koen Demyttenaere,G. de Girolamo,Josep Maria Haro,Elie G. Karam,Carmen Lara,J P Lépine,Johan Ormel,Jose Posada-Villa,Alan M. Zaslavsky,Robert Jin +14 more
TL;DR: Estimates of ADHD prevalence and correlates in the World Health Organization World Mental Health Survey Initiative should be considered more seriously in future epidemiological and clinical studies than is currently the case.
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Cannabis Use and Psychosis: A Longitudinal Population-based Study
TL;DR: Results confirm previous suggestions that cannabis use increases the risk of both the incidence of psychosis in psychosis-free persons and a poor prognosis for those with an established vulnerability to psychotic disorder.
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The Netherlands Study of Depression and Anxiety (NESDA): rationale, objectives and methods.
Brenda W.J.H. Penninx,Aartjan T.F. Beekman,Jan Smit,Frans G. Zitman,Willem A. Nolen,Philip Spinhoven,Pim Cuijpers,de Peter Jong,H.W.J. van Marwijk,Willem J J Assendelft,van der Klaas Meer,Peter F. M. Verhaak,Michel Wensing,R. de Graaf,Witte J.G. Hoogendijk,Johan Ormel,R. van Dyck +16 more
TL;DR: The Netherlands Study of Depression and Anxiety is a multi‐site naturalistic cohort study to describe the long‐term course and consequences of depressive and anxiety disorders and to integrate biological and psychosocial research paradigms within an epidemiological approach.
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Barriers to mental health treatment: Results from the WHO World Mental Health surveys
Laura Helena Andrade,Jordi Alonso,Zeina Mneimneh,J. E. Wells,Ali Al-Hamzawi,Guilherme Borges,Evelyn J. Bromet,Ronny Bruffaerts,G. de Girolamo,R. de Graaf,S. Florescu,Oye Gureje,Hristo Hinkov,Chiyi Hu,Y. Huang,Irving Hwang,Robert Jin,Elie G. Karam,V. Kovess-Masfety,Daphna Levinson,Herbert Matschinger,Siobhan O'Neill,Jose Posada-Villa,Rajesh Sagar,Nancy A. Sampson,Carmen Sasu,Dan J. Stein,Tadashi Takeshima,Maria Carmen Viana,Miguel Xavier,Ronald C. Kessler +30 more
TL;DR: Low perceived need and attitudinal barriers are the major barriers to seeking and staying in treatment among individuals with common mental disorders worldwide.
Journal ArticleDOI
Childhood abuse as a risk factor for psychotic experiences.
I.C.M. Janssen,Lydia Krabbendam,Maarten Bak,Manon Hanssen,Wilma A. M. Vollebergh,R. de Graaf,J. van Os +6 more
TL;DR: The hypothesis that individuals from the general population who report childhood abuse are at increased risk of developing positive psychotic symptoms is examined.