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Auteur M. VAN LAAR |
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Article : Périodique
Aims: To investigate the temporal pattern of appearance of a new psychoactive substance (4-fluoroamphetamine) on the Dutch drug market, as well as its patterns of use and effects. Design: Data from the Drug Information and Monitoring System (DI[...]Article : Périodique
ISSUES: The key objective of Dutch cannabis policy is to prevent and limit the risks of cannabis consumption for users, their direct environment and society ('harm reduction'). This paper will focus on the tolerated sale of cannabis in 'coffee s[...]Article : Périodique
N. LIEBREGTS ; A. BENSCHOP ; P. VAN DER POL ; M. VAN LAAR ; R. DE GRAAF ; W. VAN DEN BRINK ; D. J. KORF |In a Dutch longitudinal study on the dynamics of cannabis dependence, at baseline 600 frequent cannabis users (> = 3 days cannabis use per week in past 12 months) aged 18-30 years were interviewed. Nearly half of all participants (42%) met DSM-I[...]Rapport
M. VAN LAAR ; G. CRUTS ; R. HARTNOLL ; J. VICENTE | Lisbon : OEDT / EMCDDA | Scientific Reports | 2001Data on drug-related deaths count as one of the five epidemiological key-indicators of the EMCDDA to be implemented in the Member States of the European Union. However, figures on drug-related deaths are not directly comparable between countries[...]Article : Périodique
P. VAN DER POL ; N. LIEBREGTS ; T. M. BRUNT ; J. VAN AMSTERDAM ; R. DE GRAAF ; D. J. KORF ; W. VAN DEN BRINK ; M. VAN LAAR |Background and Aims: Increased delta-9-tetrahydrocannabinol (THC) concentrations in cannabis may lead to higher THC exposure, cannabis dependence and treatment need, but users may also adapt the actual intake of THC through reduced inhalation of[...]Article : Périodique
M. GRABSKI ; J. WALDRON ; T. P. FREEMAN ; C. MOKRYSZ ; R. J. J. VAN BEEK ; P. VAN DER POL ; B. HAUSPIE ; N. DIRKX ; J. SCHROOTEN ; T. H. ELGAN ; K. FELTMAN ; E. BENEDETTI ; G. SCALIA TOMBA ; F. FABI ; S. MOLINARO ; J. GRIPENBERG ; T. VAN HAVERE ; M. VAN LAAR ; H. V. CURRAN |BACKGROUND: Monitoring emerging trends in the increasingly dynamic European drug market is vital; however, information on change at the individual level is scarce. In the current study, we investigated changes in drug use over 12 months in Europ[...]Périodique
F. SMIT ; M. VAN LAAR ; L. WIESSING | 2006ENGLISH : Aims: Throughout the European Union efforts are made to obtain national estimates of problem drug use. These estimates are required for policy making. Given the importance of the estimates, much depends on their validity. Here we use[...]Article : Périodique
The Netherlands has seen an increase in Delta9-tetrahydrocannabinol (THC) concentrations from approximately 8% in the 1990s up to 20% in 2004. Increased cannabis potency may lead to higher THC-exposure and cannabis related harm. The Dutch govern[...]NouveautéArticle : Périodique
P. VAN DER POL ; N. LIEBREGTS ; R. DE GRAAF ; M. TEN HAVE ; D. J. KORF ; W. VAN DEN BRINK ; M. VAN LAAR |Aims: To compare the prevalence of mental disorders between frequent cannabis users with and without dependence and the general population. Design: Cross-sectional comparison of interview data. Setting: Enriched community sample of frequent ca[...]Article : Périodique
Many cannabis users 'mature out' of their drug use, and factors of cannabis use cessation have been identified. However, very little in-depth knowledge is available about the mechanisms underlying this phenomenon. Criminological studies have gai[...]Article : Périodique
R. J. J. VAN BEEK ; M. BLANKERS ; M. KLEINJAN ; J. WALDRON ; M. GRABSKI ; T. FREEMAN ; V. CURRAN ; P. VAN DER POL ; M. VAN LAAR |INTRODUCTION: Polydrug use patterns among young adults using ecstasy vary, as well as their willingness to change them. Polydrug use patterns are likely associated with different adverse health outcomes. It is unknown whether polydrug use patter[...]Rapport
D. VAN DER GOUWE ; M. GALLA ; A. VAN GAGELDONK ; E. CROES ; J. ENGELHARDT ; M. VAN LAAR ; M. BUSTER | Utrecht : Trimbos Instituut | 2006FRANÇAIS : Buts et objectifs : Suite à un appel d'offres ouvert, la Commission européenne a décidé d'engager les services de l'Institut Trimbos pour collecter et analyser les informations de base d'un rapport de la Commission conformément au P[...]Article : Périodique
Background and aims: On-line drug markets flourish and consumers have high expectations of on-line quality and drug value. The aim of this study was to (i) describe on-line drug purchases and (ii) compare on-line with off-line purchased drugs re[...]Rapport
The DRD-Standard is the Drug-Related Deaths Standard for the Member States of the European Union. It is the standard protocol for extracting and collecting data, reporting key figures to the EMCDDA and sending data to the EMCDDA. Each year, data[...]Article : Périodique
V. LORENZETTI ; C. HINDOCHA ; K. PETRILLI ; P. GRIFFITHS ; J. BROWN ; A. CASTILLO-CARNIGLIA ; J. P. CAULKINS ; A. ENGLUND ; M. A. ElSOHLY ; S. H. GAGE ; T. GROSHKOVA ; A. GUAL ; D. HAMMOND ; W. LAWN ; H. LOPEZ-PELAYO ; J. MANTHEY ; C. MOKRYSZ ; R. L. PACULA ; M. VAN LAAR ; R. VANDREY ; E. WADSWORTH ; A. WINSTOCK ; W. HALL ; H. V. CURRAN ; T. P. FREEMAN |BACKGROUND: The lack of an agreed international minimum approach to measuring cannabis use hinders the integration of multidisciplinary evidence on the psychosocial, neurocognitive, clinical and public health consequences of cannabis use. METH[...]Article : Périodique
Background: The link between leisure and cannabis use has been widely studied, but less so for young adults, and rarely with a focus on frequent cannabis use. Also, little is known about how changes in leisure develop over time and how they are [...]Article : Périodique
In a 3-year qualitative longitudinal study the role of social relationships in cannabis use and dependence in young adults (all frequent users at baseline) was explored. Overall, cannabis use and dependence declined. Changes in use were, for a c[...]Article : Périodique
Life course theory considers events in study and work as potential turning points in deviance, including illicit drug use. This qualitative study explores the role of occupational life in cannabis use and dependence in young adults. Two and thre[...]Rapport
Addiction is best seen as a chronic, though not incurable disorder that is not just the product of the characteristics of the drug but also of biological (including hereditary), personal and social influences. This view is also called the biopsy[...]