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Aim To examine the association between cannabis use during adolescence and young adulthood, and subsequent criminal charges.
Methods Data were obtained from the Young in Norway Longitudinal Study. A population‐based sample (n = 1353) was followed from 13 to 27 years of age. Data were gathered on cannabis use, alcohol consumption and alcohol problems, and use of other illegal substances such as amphetamines,...
Background Because cannabis use is associated with social, physical and psychological problems, it is important to know what causes some individuals to initiate cannabis use and a subset of those to become problematic users. Previous twin studies found evidence for both genetic and environmental influences on vulnerability, but due to considerable variation in the results it is difficult to draw...
Background Cannabis use is referenced frequently in American popular music, yet it remains uncertain whether exposure to these references is associated with actual cannabis use. We aimed to determine if exposure to cannabis in popular music is associated independently with current cannabis use in a cohort of urban adolescents.
Methods We surveyed all 9th grade students at three large US urban high...
Background Urinalysis testing in the work‐place has been adopted widely by employers in the United States to deter employee drug use and promote ‘drug‐free’ work‐places. In other countries, such as Canada, testing is focused more narrowly on identifying employees whose drug use puts the safety of others at risk.
Aims We review 20 years of published literature on questions relevant to the objectives...
Aims To establish the long‐term efficacy of a universal internet‐based alcohol and cannabis prevention programme in schools.
Methods A cluster‐randomized controlled trial was conducted to assess the effectiveness of the Climate Schools: Alcohol and Cannabis Course. The evidence‐based course, aimed at reducing alcohol and cannabis use, is facilitated by the internet and consists of 12 novel and curriculum...
Aims To describe the development and enactment of the Western Australian (WA) Cannabis Infringement Notice scheme and reflect on the lessons for researchers and policy‐makers interested in the translation of policy research to policy practice.
Methods An insiders' description of the background research, knowledge transfer strategies and political and legislative processes leading to the enactment...
Aims To examine trends in patterns of cannabis use and related harm in the Australian population between 1993 and 2007.
Design Analysis of prospectively collected data from: (1) the National Drug Strategy Household Survey (NDSHS) and Australian Secondary Student Alcohol and Drug Survey (ASSADS); (2) the National Hospital Morbidity Database (NHMD); and (3) the Alcohol and Other Drug Treatment Services...
Aims Studies have shown that the impairing effects of Δ‐9‐tetrahydrocannabinol (THC) are dose‐related. Cannabis intake increases the risk of traffic accidents. The purpose of this study was to see how different clinical tests and observations were related to blood THC concentrations and to determine whether the combined influence of THC and ethanol was different from either drug alone.
Design A retrospective...
Aims To apply item response mixture modelling (IRMM) to investigate the viability of the dimensional and categorical approaches to conceptualizing alcohol and cannabis use disorders.
Design A cross‐sectional survey assessing substance use and DSM‐IV substance use disorders.
Setting and participants A household survey of a nationally representative sample of 10 641 Australia adults (aged 18 years...
In the United Kingdom, as in many places, cannabis use is considered substantially within a criminal justice rather than a public health paradigm with prevention policy embodied in the Misuse of Drugs Act. In 2002 the maximum custodial sentence tariff for cannabis possession under the Act was reduced from 5 to 2 years. Vigorous and vociferous public debate followed this decision, centred principally...
Aim To illustrate how limitations in the cannabis literature undermine our ability to understand cannabis‐related harms and problems experienced by users and identify users at increased risk of experiencing adverse outcomes of use.
Method and results Limitations have been organized into three overarching themes. The first relates to the classification systems employed by researchers to categorize...
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