
Détail de l'auteur
Auteur J. LEUNG |
Documents disponibles écrits par cet auteur (21)

![]()
Chapitre
Cannabis is the illicit drug that is most often used by adolescents and the one that young people are most likely to develop dependence on. Cannabis dependence is more common in males, especially those who display disruptive and antisocial behav[...]![]()
Article : Périodique
G. C. K. CHAN ; C. GARTNER ; C. LIM ; T. SUN ; W. HALL ; J. CONNOR ; D. STJEPANOVIC ; J. LEUNG |AIM: To (i) estimate the prevalence of adolescent vaping in 47 lower-middle, upper-middle and high-income countries, and (ii) test the association between implementation of World Health Organisation (WHO) tobacco control policies and adolescent [...]![]()
Article : Périodique
L. A. HINES ; A. TRICKEY ; J. LEUNG ; S. LARNEY ; A. PEACOCK ; L. DEGENHARDT ; S. COLLEDGE ; M. HICKMAN ; J. GREBELY ; E. B. CUNNINGHAM ; J. STONE ; K. DUMCHEV ; P. GRIFFITHS ; P. VICKERMAN ; R. P. MATTICK ; M. LYNSKEY |BACKGROUND: Globally, an estimated 15.6 million people inject drugs. We aimed to investigate global variation in the age profile of people who inject drugs (PWID), identify country-level factors associated with age of PWID, and assess the associ[...]![]()
Article : Périodique
S. CASSWELL ; T. HUCKLE ; K. PARKER ; T. GRAYDON-GUY ; J. LEUNG ; C. PARRY ; P. TORUN ; G. SENGEE ; C. PHAM ; G. GRAY-PHILLIP ; S. CALLINAN ; S. CHAIYASONG ; A. M. MACKINTOSH ; P. MEIER ; S. RANDERSON |BACKGROUND: Alcohol policies stand out among other noncommunicable disease-relevant policies for the lack of uptake. Composite indicators have been developed to measure the effects of alcohol control policy. We investigated whether drinking patt[...]![]()
Article : Périodique
L. DEGENHARDT ; P. WEBB ; S. COLLEDGE-FRISBY ; J. IRELAND ; A. WHEELER ; S. OTTAVIANO ; A. WILLING ; A. KAIROUZ ; E. B. CUNNINGHAM ; B. HAJARIZADEH ; J. LEUNG ; L. T. TRAN ; O. PRICE ; A. PEACOCK ; P. VICKERMAN ; M. FARRELL ; G. J. DORE ; M. HICKMAN ; J. GREBELY |BACKGROUND: People who inject drugs are exposed to various and changing risk environments and are at risk of multiple harms related to injecting drug use (IDU). We aimed to undertake a global systematic review of the prevalence of IDU, key IDU-r[...]![]()
Article : Périodique
S. COLLEDGE ; J. LEUNG ; S. LARNEY ; A. PEACOCK ; J. GREBELY ; M. HICKMAN ; E. CUNNINGHAM ; A. TRICKEY ; J. STONE ; P. VICKERMAN ; L. DEGENHARDT |BACKGROUND: People who inject drugs (PWID) do so at varying frequencies. More frequent injecting is associated with skin and soft tissue infection, blood borne viruses, and overdose. The aims of this review are to estimate the prevalence of inje[...]![]()
Article : Périodique
G. C. K. CHAN ; D. STJEPANOVIC ; C. LIM ; T. SUN ; A. SHANMUGA ANANDAN ; J. P. CONNOR ; C. GARTNER ; W. D. HALL ; J. LEUNG |BACKGROUND AND AIMS: Studies have consistently found a longitudinal association between e-cigarette use (vaping) and cigarette smoking. Many have interpreted such association as causal. This systematic review and meta-analysis evaluated the plau[...]![]()
Article : Périodique
S. COLLEDGE-FRISBY ; S. OTTAVIANO ; P. WEBB ; J. GREBELY ; A. WHEELER ; E. B. CUNNINGHAM ; B. HAJARIZADEH ; J. LEUNG ; A. PEACOCK ; P. VICKERMAN ; M. FARRELL ; G. J. DORE ; M. HICKMAN ; L. DEGENHARDT |BACKGROUND: Harm reduction and treatment programmes are essential for reducing harms for people who inject drugs (PWID). We aimed to update estimates from a 2017 review of global coverage of needle and syringe exchange programmes (NSPs), opioid [...]![]()
Article : Périodique
J. LEUNG ; A. PEACOCK ; S. COLLEDGE ; J. GREBELY ; E. B. CUNNINGHAM ; M. HICKMAN ; P. VICKERMAN ; J. STONE ; A. TRICKEY ; K. DUMCHEV ; M. LYNSKEY ; L. HINES ; P. GRIFFITHS ; R. P. MATTICK ; L. DEGENHARDT ; S. LARNEY |BACKGROUND: Women-specific factors exist that increases vulnerability to drug-related harms from injection drug use, including blood-borne viruses (BBVs), but gender-based differences in BBV prevalence have not been systematically examined. MET[...]![]()
Article : Périodique
L. DEGENHARDT ; A. PEACOCK ; S. COLLEDGE ; J. LEUNG ; J. GREBELY ; P. VICKERMAN ; J. STONE ; E. B. CUNNINGHAM ; A. TRICKEY ; K. DUMCHEV ; M. LYNSKEY ; P. GRIFFITHS ; R. P. MATTICK ; M. HICKMAN ; S. LARNEY |Background: Sharing of equipment used for injecting drug use (IDU) is a substantial cause of disease burden and a contributor to blood-borne virus transmission. We did a global multistage systematic review to identify the prevalence of IDU among[...]![]()
Article : Périodique
S. LARNEY ; A. PEACOCK ; J. LEUNG ; S. COLLEDGE ; M. HICKMAN ; P. VICKERMAN ; J. GREBELY ; K. V. DUMCHEV ; P. GRIFFITHS ; L. HINES ; E. B. CUNNINGHAM ; R. P. MATTICK ; M. LYNSKEY ; J. MARSDEN ; J. STRANG ; L. DEGENHARDT |Background: People who inject drugs (PWID) are a key population affected by the global HIV and hepatitis C virus (HCV) epidemics. HIV and HCV prevention interventions for PWID include needle and syringe programmes (NSP), opioid substitution ther[...]![]()
Article : Périodique
J. GREBELY ; S. LARNEY ; A. PEACOCK ; S. COLLEDGE ; J. LEUNG ; M. HICKMAN ; P. VICKERMAN ; S. BLACH ; E. B. CUNNINGHAM ; K. DUMCHEV ; M. LYNSKEY ; J. STONE ; A. TRICKEY ; H. RAZAVI ; R. P. MATTICK ; M. FARRELL ; G. J. DORE ; L. DEGENHARDT |BACKGROUND AND AIMS: People who have recently injected drugs are a priority population in efforts to achieve hepatitis C virus (HCV) elimination. This study estimated the prevalence and number of people with recent injecting drug use living with[...]![]()
Article : Périodique
A. PEACOCK ; J. LEUNG ; S. LARNEY ; S. COLLEDGE ; M. HICKMAN ; J. REHM ; G. A. GIOVINO ; R. WEST ; W. HALL ; P. GRIFFITHS ; R. ALI ; L. GOWING ; J. MARSDEN ; A. J. FERRARI ; J. GREBELY ; M. FARRELL ; L. DEGENHARDT |AIMS: This review provides an up-to-date curated source of information on alcohol, tobacco and illicit drug use and their associated mortality and burden of disease. Limitations in the data are also discussed, including how these can be addresse[...]![]()
Article : Périodique
L. T. TRAN ; A. PEACOCK ; S. COLLEDGE ; S. MEMEDOVIC ; J. GREBELY ; J. LEUNG ; S. LARNEY ; A. TRICKEY ; J. STONE ; P. VICKERMAN ; M. HICKMAN ; L. DEGENHARDT |Background: Injecting risk behaviour, such as receptive sharing of injecting equipment and/or re-using one's equipment, is associated with bloodborne virus transmission and infections in people who inject drugs (PWID). We aimed to estimate preva[...]![]()
Article : Périodique
T. SUN ; C. C. W. LIM ; B. N. RUTHERFORD ; B. JOHNSON ; J. LEUNG ; C. GARTNER ; W. D. HALL ; J. P. CONNOR ; G. C. K. CHAN |Aims: E-cigarettes may benefit public health if they are effective for smoking cessation. Evidence suggests that the frequency of e-cigarette use is likely an important predicator of smoking cessation success, so we examined the associations bet[...]