Auteur A. BENSCHOP

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Buying and selling crack: Transactions at the retail level and the role of user-sellers

A. OTEO PÉREZ ; A. BENSCHOP ; D. J. KORF | 2014
Dans Journal of Drug Issues (Vol.44, n°1, January 2014) Article : Périodique

To assess key characteristics of the retail crack market and the role of users as buyers and sellers, data from a survey inside and outside institutional setting among 1,039 crack users in the three largest Dutch cities were analyzed to explore [...]

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Cannabis dependence and peer selection in social networks of frequent users

N. LIEBREGTS ; A. BENSCHOP ; P. VAN DER POL ; M. VAN LAAR ; R. DE GRAAF ; W. VAN DEN BRINK ; D. J. KORF | 2011
Dans Contemporary Drug Problems (Vol.38, n°1, Spring 2011) Article : Périodique

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[...]

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Criminal involvement and crime specialization among crack users in the Netherlands

A. OTEO PÉREZ ; A. BENSCHOP ; P. BLANKEN ; D. J. KORF | 2015
Dans European Addiction Research (Vol.21, n°2, February 2015) Article : Périodique

BACKGROUND/AIMS: Crack users in the Netherlands are an ageing and diverse population with longstanding criminal careers. Our aim was to assess factors associated with current criminal involvement and specialization in selling drugs, property cri[...]

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Differential profiles of crack users in respondent-driven and institutional samples: a three-site comparison

A. OTEO PÉREZ ; A. BENSCHOP ; D. J. KORF | 2012
Dans European Addiction Research (Vol.18, n°4, June 2012) Article : Périodique

BACKGROUND/AIM: Respondent-driven sampling (RDS) is increasingly applied in social epidemiological surveys among "hidden populations" of hard drug users. The objective of the present study was to assess whether the profile of frequent crack user[...]

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Estimating the prevalence of crack dependence using capture-recapture with institutional and field data: a three-city study in the Netherlands

A. O. PÉREZ ; M. J. L. F. CRUYFF ; A. BENSCHOP ; D. J. KORF | 2013
Dans Substance Use and Misuse (Vol.48, n°1-2, 2013) Article : Périodique

The aim of this study was to estimate the prevalence of crack dependence in the three largest Dutch cities (Amsterdam, Rotterdam, The Hague), stratified by gender and age. Three-sample capture-recapture, using data (collected between 2009 and 20[...]

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Health and social problems associated with recent novel psychoactive substance (NPS) use amongst marginalised, nightlife and online users in six European countries

M. C. VAN HOUT ; A. BENSCHOP ; M. BUJALSKI ; K. DABROWSKA ; Z. DEMETROVICS ; K. FELVINCZI ; E. HEARNE ; S. HENRIQUES ; Z. KALO ; G. KAMPHAUSEN ; D. KORF ; J. P. SILVA ; L. WIECZOREK ; B. WERSE | 2018
Dans International Journal of Mental Health and Addiction (Vol.16, n°2, April 2018) Article : Périodique

Continued diversification and use of new psychoactive substances (NPS) across Europe remains a public health challenge. The study describes health and social consequences of recent NPS use as reported in a survey of marginalised, nightlife and o[...]

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How and where to find NPS users: A comparison of methods in a cross-national survey among three groups of current users of new psychoactive substances in Europe

D. KORF ; A. BENSCHOP ; B. WERSE ; G. KAMPHAUSEN ; K. FELVINCZI ; K. DABROWSKA ; S. HERNRIQUES ; T. NABBEN ; L. WIECZOREK ; M. BUJALSKI ; Z. KALO ; E. HEARNE ; M. C. VAN HOUT | 2021
Dans International Journal of Mental Health and Addiction (Vol.19, n°4, August 2021) Article : Périodique

Use of new psychoactive substances (NPS) across Europe remains a public health challenge. The study describes potentials and limitations of methods in a transnational survey of recent marginalised, nightlife and online community NPS users in Ger[...]

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Local politics and retail cannabis markets: the case of the Dutch coffeeshops

M. WOUTERS ; A. BENSCHOP ; D. J. KORF | 2010
Dans International Journal of Drug Policy (Vol.21, n°4, July 2010) Article : Périodique

BACKGROUND: Cannabis coffeeshops are concentrated in specific areas in the Netherlands; close to 80% of Dutch municipalities have no coffeeshops. We investigated why such wide local differences exist. METHODS: Regression analyses were carried ou[...]

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Pill testing, ecstasy and prevention: a scientific evaluation in three European cities

A. BENSCHOP ; RABES M. ; D. J. KORF | 2003
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ENGLISH : Ecstasy is the most common "party drug" or "dance drug" in the European Union. Pill-testing is one of the methods applied to reduce the risks related to the use of ecstasy. Pill-testing has been the subject of both scientific and pol[...]

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Risk factors of gamma-hydroxybutyrate overdosing

D. J. KORF ; T. NABBEN ; A. BENSCHOP ; K. RIBBINK ; J. VAN AMSTERDAM | 2014
Dans European Addiction Research (Vol.20, n°2, February 2014) Article : Périodique

The aim of this study was to identify in recreational drug users the factors which increase the risk of overdosing (OD) with gamma-hydroxybutyrate (GHB). A purposive sample of 45 experienced GHB users was interviewed, equally divided into three [...]

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Sharing, group-buying, social supply, offline and online dealers: How users in a sample from six European countries procure New Psychoactive Substances (NPS)

B. WERSE ; A. BENSCHOP ; G. KAMPHAUSEN ; M. C. VAN HOUT ; S. HENRIQUES ; J. P. SILVA ; K. DABROWSKA ; L. WIECZOREK ; M. BUJALSKI ; K. FELVINCZI ; D. KORF | 2019
Dans International Journal of Mental Health and Addiction (Vol.17, n°5, October 2019) Article : Périodique

Given the multiple ways of regulations and market situations for new psychoactive substances (NPS), it is of interest how NPS users procure their drugs in different countries as well as in different user groups. Data comes from a face-to-face an[...]

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Triangulating Amsterdam's illicit stimulant use trends by wastewater analysis and recreational drug use monitoring

T. L. TER LAAK ; E. EMKE ; A. BENSCHOP ; T. NABBEN ; F. BÉEN | 2022
Dans Forensic Science International (Vol.340, November 2022) Article : Périodique

Drug consumption estimates are of relevance because of public health effects as well as associated criminal activities. Wastewater analysis of drug residues enables the estimation of drug consumption and drug markets. Short-term and long-term tr[...]

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Visitors of the Dutch drug checking services: Profile and drug use experience

R. P. J. KONING ; A. BENSCHOP ; C. WIJFFELS ; J. NOIJEN | 2021
Dans International Journal of Drug Policy (Vol.95, September 2021) Article : Périodique

Background Drug checking services (DCS) provide information about drug content and purity, alongside personalized feedback, to people who use drugs; however, the demographic and drug use characteristics of DCS clients are rarely reported. This p[...]

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Where, when and with whom: Cannabis use, settings and self-regulation rules

K. SKLIAMIS ; A. BENSCHOP ; N. LIEBREGTS ; D. J. KORF | 2021
Dans Contemporary Drug Problems (Vol.48, n°3, September 2021) Article : Périodique

This article examines to what extent and how cannabis users in different countries, with different cannabis legislation and policies practice normalization and self-regulation of cannabis use in everyday life. Data were collected in a survey amo[...]

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Why do people use new psychoactive substances? Development of a new measurement tool in six European countries

A. BENSCHOP ; R. URBAN ; M. KAPITANY-FOVENY ; M. C. VAN HOUT ; K. DABROWSKA ; K. FELVINCZI ; E. HEARNE ; S. HENRIQUES ; Z. KALO ; G. KAMPHAUSEN ; J. P. SILVA ; L. WIECZOREK ; B. WERSE ; M. BUJALSKI ; D. KORF ; Z. DEMETROVICS | 2020
Dans Journal of Psychopharmacology (Vol.34, n°6, June 2020) Article : Périodique

INTRODUCTION: New psychoactive substances (NPS) pose a public health threat. Many studies have tried to identify the reasons of NPS use; however, none of them have so far used any standardised measures. The aim of this study was (i) to develop a[...]

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