Concomitant heroin and cocaine use among opioid-dependent patients during methadone, buprenorphine or morphine opioid agonist therapy

S. GASTBERGER ; M. R. BAUMGARTNER ; M. SOYKA ; B. B. QUEDNOW ; L. M. HULKA ; M. HERDENER ; E. SEIFRITZ ; J. MUTSCHLER | 2019
Dans European Addiction Research (Vol.25, n°4, June 2019) Article : Périodique

BACKGROUND: Among all the treatment methods developed so far, opioid agonist treatment (OAT) is the most effective therapy for opioid dependence. While methadone (MTD) is the most commonly used, fewer data are available on alternative opioid ago[...]

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Evaluating the efficacy of a web-based self-help intervention with and without chat counseling in reducing the cocaine use of problematic cocaine users: the study protocol of a pragmatic three-arm randomized controlled trial

M. P. SCHAUB ; L. J. MAIER ; A. WENGER ; L. STARK ; O. BERG ; T. BECK ; B. B. QUEDNOW ; S. HAUG | 2015
Dans BMC Psychiatry (Vol.15, n°156, 10 July 2015) Article : Périodique

BACKGROUND: Web-based self-help interventions that aim to reduce problematic substance use are able to reach "hidden" consumer groups in the general population who often fear stigmatization and thus avoid institutional addiction treatment. In We[...]

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High prevalence and early onsets: Legal and illegal substance use in an urban cohort of young adults in Switzerland

B. B. QUEDNOW ; A. STEINHOFF ; L. BECHTIGER ; D. RIBEAUD ; M. EISNER ; L. SHANAHAN | 2022
Dans European Addiction Research (Vol.28, n°3, May 2022) Article : Périodique

INTRODUCTION: Debates about the legalization of illegal substances (e.g., cannabis) continue around the globe. A key consideration in these debates is the adequate protection of young people, which could be informed by current prevalence and age[...]

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Words versus strands: Reliability and stability of concordance rates of self-reported and hair-analyzed substance use of young adults over time

C. JANOUSCH ; L. EGGENBERGER ; A. STEINHOFF ; L. JOHNSON-FERGUSON ; L. BECHTIGER ; M. LOHER ; D. RIBEAUD ; M. EISNER ; M. R. BAUMGARTNER ; T. M. BINZ ; L. SHANAHAN ; B. B. QUEDNOW | 2025
Dans European Addiction Research (Vol.31, n°1, April 2025) Article : Périodique

INTRODUCTION: Population-level substance use research primarily relies on self-reports, which often underestimate actual use. Hair analyses offer a more objective estimate; however, longitudinal studies examining concordance are lacking. Previou[...]

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