By Dr Janni Leung

Journal articles

Wilson J; Langcake A; Bryant Z; Freeman TP; Leung J; Chan GCK; Englund A; Graham M; Stockings E, 2025, 'The safety and efficacy of cannabinoids for the treatment of mental health and substance use disorders: protocol for a systematic review and meta-analysis', Systematic Reviews, 14, http://dx.doi.org/10.1186/s13643-024-02657-3

Johnson B; Sun T; Wu L; Seal S; Stjepanovic D; Chan G; Leung J, 2025, 'Content Analysis of the Portrayal of Prescription Stimulants on TikTok', Journal of Attention Disorders, 29, pp. 617 - 627, http://dx.doi.org/10.1177/10870547251318834

Belete H; Mekonen T; Connor JP; Chan G; Hides L; Leung J, 2025, 'Tobacco smoking in Sub-Saharan Africa: A systematic review and meta-analysis', Drug and Alcohol Review, 44, pp. 1079 - 1091, http://dx.doi.org/10.1111/dar.14040

Leung J; Tisdale C; Choi J; Ellem R; Davidson L; Chan GCK; White MJ; Kavanagh DJ; Quinn C; Hides L, 2025, 'E-Cigarette Use Among High School Students—a Cross-Sectional Study of Associated Risk Factors for the Use of Flavour-Only and Nicotine Vapes', International Journal of Mental Health and Addiction, 23, pp. 236 - 250, http://dx.doi.org/10.1007/s11469-023-01099-7

Tisdale C; Leung J; de Andrade D; Hides L, 2025, 'What Client Demographic, Substance Use, Mental Health, Treatment, and Psychological Variables Predict Residential Treatment Completion for Substance Use Disorders?', International Journal of Mental Health and Addiction, 23, pp. 49 - 69, http://dx.doi.org/10.1007/s11469-022-01002-w

Johnson B; Stjepanovic D; Leung J; Chan GCK, 2025, '“Everything’s a Challenge”: An Interview Study of ADHD Individuals in the Midst of the Prescription Stimulant Shortage', Journal of Attention Disorders, 29, pp. 120 - 127, http://dx.doi.org/10.1177/10870547241288351

Dawson D; Chan G; Stjepanović D; Lorenzetti V; Hall WD; Leung J, 2025, 'The prevalence and correlates of self-reported cannabis use for medicinal, dual and recreational motives in Australia: Findings from the National Drug Strategy Household Survey 2022/2023', Drug and Alcohol Review, http://dx.doi.org/10.1111/dar.14062

Dawson D; Stjepanovic D; Lorenzetti V; Cheung C; Hall W; Leung J, 2025, 'The Prevalence of Cannabis Use Disorders in People who Use Medicinal cannabis: A Systematic Review and Meta-Analysis', Drug and Alcohol Dependence, 267, pp. 111464 - 111464, http://dx.doi.org/10.1016/j.drugalcdep.2024.111464

Davidson L; Leung J; Quinn C; Ellem R; Tisdale C; Choi J; Carlyle M; White M; Kavanagh DJ; Hides L, 2024, 'Adolescent alcohol drinking and cannabis use: Longitudinal and cohort analysis of high school students in Australia', International Journal of Alcohol and Drug Research, 12, pp. 77 - 84, http://dx.doi.org/10.7895/ijadr.499

Lim CCW; Rutherford B; Gartner C; McClure-Thomas C; Foo S; Su FY; Scheurer R; Sebayang S; Chan G; Stjepanović D; Fausiah F; Farassania G; Leung J, 2024, 'A systematic review of second-hand smoking mass media campaigns (2002–2022)', BMC Public Health, 24, http://dx.doi.org/10.1186/s12889-024-18222-5

Gardner LA; O’Dean S; Rowe AL; Hawkins A; Egan L; Stockings E; Teesson M; Hides L; Catakovic A; Ellem R; McBride N; Allsop S; Blackburn K; Stapinski L; Freeman B; Leung J; Thornton L; Birrell L; Champion KE; Newton NC, 2024, 'Research Letter: E-cigarette use and mental health during early adolescence: An Australian survey among over 5000 young people', Australian and New Zealand Journal of Psychiatry, 58, pp. 1103 - 1106, http://dx.doi.org/10.1177/00048674241267908

Yimer TM; McClure-Thomas C; Stjepanovic D; Wilson J; Chan GCK; Hall WD; Leung J, 2024, 'The relationship between cannabis and nicotine use: A systematic review and meta-analysis', Addiction, 119, pp. 2076 - 2087, http://dx.doi.org/10.1111/add.16642

Lim CCW; Sun T; Vu G; Chan GCK; Leung J, 2024, 'The underbelly of E-cigarette advertising: regulating online markets on social media platforms', Harm Reduction Journal, 21, http://dx.doi.org/10.1186/s12954-024-01027-5

Vu GT; Stjepanović D; Sun T; Leung J; Chung J; Connor J; Thai PK; Gartner CE; Tran BX; Hall WD; Chan G, 2024, 'Predicting the long-term effects of electronic cigarette use on population health: a systematic review of modelling studies', Tobacco Control, 33, pp. 790 - 797, http://dx.doi.org/10.1136/tc-2022-057748

Chan GCK; Saunders JB; Stjepanović D; Mcclure-Thomas C; Connor J; Hides L; Wood A; King D; Siste K; Long J; Leung JK, 2024, 'The Gaming Disorder Identification Test (GADIT) - A screening tool for Gaming Disorder based on ICD-11', Journal of Behavioral Addictions, 13, pp. 729 - 741, http://dx.doi.org/10.1556/2006.2024.00038

de Andrade D; Davidson L; Robertson C; Williams P; Leung J; Walter Z; Allan J; Hides L, 2024, 'Randomized effectiveness-implementation trial of dialectical behavior therapy interventions for young people with borderline personality disorder symptoms', Journal of Clinical Psychology, 80, pp. 2117 - 2133, http://dx.doi.org/10.1002/jclp.23725

Belete H; Yimer TM; Dawson D; Espinosa DC; Ambaw F; Connor JP; Chan G; Hides L; Leung J, 2024, 'Alcohol use and alcohol use disorders in sub-Saharan Africa: A systematic review and meta-analysis', Addiction, 119, pp. 1527 - 1540, http://dx.doi.org/10.1111/add.16514

Tisdale C; de Andrade D; Leung J; Campbell G; Hides L, 2024, 'The risk of repeated suicidal presentations following residential treatment for substance use disorders: A recurrent event analysis using linked administrative data', Journal of Affective Disorders, 360, pp. 364 - 375, http://dx.doi.org/10.1016/j.jad.2024.05.129

Rutherford BN; Leung J; Stjepanović D; Chan GCK, 2024, 'Through the looking glass: An alcohol advertisement every 3 minutes', Drug and Alcohol Review, 43, pp. 1426 - 1434, http://dx.doi.org/10.1111/dar.13886

Leung J; Sun T; Vu G; Dawson D; Chan GCK, 2024, 'Promotions of vaping products near schools and central business district: A descriptive cross-sectional study', Health Promotion Journal of Australia, 35, pp. 835 - 839, http://dx.doi.org/10.1002/hpja.791

Saunders JB; Chan G; Leung J; Stjepanović D; Connor JP, 2024, 'The nature and characteristics of problem gaming, with a focus on ICD-11 diagnoses', Current Opinion in Psychiatry, 37, pp. 292 - 300, http://dx.doi.org/10.1097/YCO.0000000000000949

Chan GCK; Sun T; Stjepanović D; Vu G; Hall WD; Connor JP; Leung J, 2024, 'Designing observational studies for credible causal inference in addiction research—Directed acyclic graphs, modified disjunctive cause criterion and target trial emulation', Addiction, 119, pp. 1125 - 1134, http://dx.doi.org/10.1111/add.16442

Leung J; Saunders JB; Stjepanović D; Tisdale C; McClure-Thomas C; Connor J; Gullo M; Wood AP; Kai Chan GC, 2024, 'Extended hours of video game play and negative physical symptoms and pain', Computers in Human Behavior, 155, http://dx.doi.org/10.1016/j.chb.2024.108181

Webb P; Ireland J; Colledge-Frisby S; Peacock A; Leung J; Vickerman P; Farrell M; Hickman M; Grebely J; Degenhardt L, 2024, 'Patterns of drug use among people who inject drugs: A global systematic review and meta-analysis', International Journal of Drug Policy, 128, http://dx.doi.org/10.1016/j.drugpo.2024.104455

Leung J; Lim C; Belete H; Mcclure-Thomas C; Foo S; Chan GCK, 2024, 'Regional and Country Prevalence Estimates of Unsafe Sex Among Adolescents in 68 Low-Income and Middle-Income Countries', Archives of Sexual Behavior, 53, pp. 2337 - 2346, http://dx.doi.org/10.1007/s10508-024-02861-1

Brauer M; Roth GA; Aravkin AY; Zheng P; Abate KH; Abate YH; Abbafati C; Abbasgholizadeh R; Abbasi MA; Abbasian M; Abbasifard M; Abbasi-Kangevari M; Abd ElHafeez S; Abd-Elsalam S; Abdi P; Abdollahi M; Abdoun M; Abdulah DM; Abdullahi A; Abebe M; Abedi A; Abedi A; Abegaz TM; Zuñiga RAA; Abiodun O; Abiso TL; Aboagye RG; Abolhassani H; Abouzid M; Aboye GB; Abreu LG; Abualruz H; Abubakar B; Abu-Gharbieh E; Abukhadijah HJJ; Aburuz S; Abu-Zaid A; Adane MM; Addo IY; Addolorato G; Adedoyin RA; Adekanmbi V; Aden B; Adetunji JB; Adeyeoluwa TE; Adha R; Adibi A; Adnani QES; Adzigbli LA; Afolabi AA; Afolabi RF; Afshin A; Afyouni S; Afzal MS; Afzal S; Agampodi SB; Agbozo F; Aghamiri S; Agodi A; Agrawal A; Agyemang-Duah W; Ahinkorah BO; Ahmad A; Ahmad D; Ahmad F; Ahmad N; Ahmad S; Ahmad T; Ahmed A; Ahmed A; Ahmed A; Ahmed LA; Ahmed MB; Ahmed S; Ahmed SA; Ajami M; Akalu GT; Akara EM; Akbarialiabad H; Akhlaghi S; Akinosoglou K; Akinyemiju T; Akkaif MA; Akkala S; Akombi-Inyang B; Al Awaidy S; Al Hasan SM; Alahdab F; AL-Ahdal TMA; Alalalmeh SO; Alalwan TA; Al-Aly Z; Alam K; Alam N; Alanezi FM; Alanzi TM; Albakri A; AlBataineh MT; Aldhaleei WA; Aldridge RW; Maulik PK; Godinho M; Biswas RK; Resnikoff S; Sachdev P; Mitchell P; Dai-Keller Z; Huda MN; Sundstorm J; Boufous S; Feng X; Xu L; Peprah P; Degenhardt L; Schutte A; Pesudovs K; Peden A; Okeke S; Si Y; Leung J, 2024, 'Global burden and strength of evidence for 88 risk factors in 204 countries and 811 subnational locations, 1990–2021: a systematic analysis for the Global Burden of Disease Study 2021', Lancet, 403, pp. 2162 - 2203, http://dx.doi.org/10.1016/S0140-6736(24)00933-4

Ferrari AJ; Santomauro DF; Aali A; Abate YH; Abbafati C; Abbastabar H; Elhafeez SA; Abdelmasseh M; Abd-Elsalam S; Abdollahi A; Abdullahi A; Abegaz KH; Zuñiga RAA; Aboagye RG; Abolhassani H; Abreu LG; Abualruz H; Abu-Gharbieh E; Abu-Rmeileh NM; Ackerman IN; Addo IY; Addolorato G; Adebiyi AO; Adepoju AV; Adewuyi HO; Afyouni S; Afzal S; Afzal S; Agodi A; Ahmad A; Ahmad D; Ahmad F; Ahmad S; Ahmed A; Ahmed LA; Ahmed MB; Ajami M; Akinosoglou K; Akkaif MA; Hasan SMA; Alalalmeh SO; Al-Aly Z; Albashtawy M; Aldridge RW; Alemu MD; Alemu YM; Alene KA; Al-Gheethi AAS; Alharrasi M; Alhassan RK; Ali MU; Ali R; Ali SSS; Alif SM; Aljunid SM; Al-Marwani S; Almazan JU; Alomari MA; Al-Omari B; Altaany Z; Alvis-Guzman N; Alvis-Zakzuk NJ; Alwafi H; Al-Wardat MS; Al-Worafi YM; Aly S; Alzoubi KH; Amare AT; Amegbor PM; Ameyaw EK; Amin TT; Amindarolzarbi A; Amiri S; Amugsi DA; Ancuceanu R; Anderlini D; Anderson DB; Andrade PP; Andrei CL; Ansari H; Antony CM; Anwar S; Anwar SL; Anwer R; Anyanwu PE; Arab JP; Arabloo J; Arafat M; Araki DT; Aravkin AY; Arkew M; Armocida B; Arndt MB; Arooj M; Artamonov AA; Aruleba RT; Arumugam A; Ashbaugh C; Ashemo MY; Ashraf M; Onie S; Godinho M; Okeke S; Dai-Keller Z; Sharma S; Sundstorm J; Xu L; Peprah P; Degenhardt L; Pesudovs K; Peden A; Hunter J; Sachdev P; Mitchell P; Feng X; Leung J, 2024, 'Global incidence, prevalence, years lived with disability (YLDs), disability-adjusted life-years (DALYs), and healthy life expectancy (HALE) for 371 diseases and injuries in 204 countries and territories and 811 subnational locations, 1990–2021: a systematic analysis for the Global Burden of Disease Study 2021', Lancet, 403, pp. 2133 - 2161, http://dx.doi.org/10.1016/S0140-6736(24)00757-8

Østertun Geirdal AK; Leung J; Price D; Kabelenga I; Lamph G; Thygesen H; Ruffolo MR; Bonsaksen T, 2024, 'Associations Between Demographic Variables, Psychosocial Health, Quality of Life, and Happiness in the Context of COVID-19', Applied Research in Quality of Life, 19, pp. 603 - 617, http://dx.doi.org/10.1007/s11482-023-10255-z

Bonsaksen T; Thygesen H; Leung J; Lamph G; Kabelenga I; Østertun Geirdal A, 2024, 'Patterns of Social Media Use across Age Groups during the COVID-19 Pandemic: A Study across Four Countries', Social Sciences, 13, http://dx.doi.org/10.3390/socsci13040194

Dawson D; Stjepanović D; Lorenzetti V; Cheung C; Hall W; Leung J, 2024, 'The prevalence of cannabis use disorders in people who use medicinal cannabis: A systematic review and meta-analysis', Drug and Alcohol Dependence, 257, http://dx.doi.org/10.1016/j.drugalcdep.2024.111263

Price D; Bonsaksen T; Leung J; Ruffolo M; Lamph G; Hawkins K; Østertun Geirdal A, 2024, 'The Psychosocial Health of Black/African Americans Compared with People of Other Races/Ethnic Origins during the COVID-19 Pandemic', Covid, 4, pp. 506 - 517, http://dx.doi.org/10.3390/covid4040034

Leung J; Yimer TM; Chiu V; Hall WD; Connor JP; Chan GCK, 2024, 'Participation in Australian drug treatment programs for individuals engaging in high-risk substance use: Data from a nationally representative sample', Drug and Alcohol Review, 43, pp. 688 - 693, http://dx.doi.org/10.1111/dar.13792

Dawson D; Stjepanovic D; Lorenzetti V; Hall WD; Leung J, 2024, 'How much cannabis is used in a joint in Australia? An experimental investigation into use by potency and frequency', Drug and Alcohol Review, 43, pp. 226 - 232, http://dx.doi.org/10.1111/dar.13747

Tisdale C; Leung J; de Andrade D; Hides L, 2024, 'Investigating the Critical Period for Alcohol or Other Drug-Related Presentations Following Access to Residential Substance Use Treatment: a Data Linkage Study', International Journal of Mental Health and Addiction, http://dx.doi.org/10.1007/s11469-024-01248-6

Leung J; Lim C; Sun T; Vu G; McClure-Thomas C; Bao Y; Tran L; Santo T; Fausiah F; Farassania G; Chan GCK; Sebayang SK, 2024, 'Preventable Deaths Attributable to Second-Hand Smoke in Southeast Asia—Analysis of the Global Burden of Disease Study 2019', International Journal of Public Health, 69, http://dx.doi.org/10.3389/ijph.2024.1606446

Leung J; Ellem R; Glasgow S; Rowe AL; Gardner L; Davidson L; Campbell G; Pocuca N; Tisdale C; Chan G; Hides L, 2024, 'The Use and Knowledge Around Vaping and Their Correlates Among University Students—A Cross-sectional Australian Study', International Journal of Mental Health and Addiction, http://dx.doi.org/10.1007/s11469-024-01281-5

Lim CCW; Sun T; Gartner C; Connor J; Fahmi M; Hall W; Hames S; Stjepanović D; Chan G; Leung J, 2024, 'What is the hype on #MedicinalCannabis in the United States? A content analysis of medicinal cannabis tweets', Drug and Alcohol Review, 43, pp. 28 - 35, http://dx.doi.org/10.1111/dar.13618

Ashley DP; Rutherford BN; Lim CCW; Cheng B; Sun T; Vu G; Johnson B; Chung J; Huang S; Leung J; Stjepanović D; Connor JP; Chan GCK, 2024, 'Effect of Tobacco and E-Cigarette-Related Social Media Content on Youth', Journal of the National Medical Association, 116, pp. 420 - 420, http://dx.doi.org/10.1016/j.jnma.2024.07.023

Yimer TM; Chan GCK; Belete H; Hides L; Leung J, 2023, 'Treatment-seeking behavior and barriers to mental health service utilization for depressive symptoms and hazardous drinking: The role of religious and traditional healers in mental healthcare of Northwest Ethiopia', Global Mental Health, 10, http://dx.doi.org/10.1017/gmh.2023.88

Leung J; Lim C; McClure-Thomas C; Foo S; Sebayang S; Farassania G; Fausiah F; Gartner C; Chan GCK, 2023, 'Adolescent Exposure to Online Advertisements and Promotions for Tobacco Products on the Internet—A Cross-Sectional Analysis of the Global Youth Tobacco Surveys', Journal of Adolescent Health, 73, pp. 1138 - 1144, http://dx.doi.org/10.1016/j.jadohealth.2023.07.019

Hajarizadeh B; Kairouz A; Ottaviano S; Ireland J; Willing A; Cunningham E; Webb P; Colledge-Frisby S; Wheeler A; Leung J; Tran LT; Price O; Vickerman P; Farrell M; Hickman M; Dore GJ; Bergenström A; Degenhardt L; Grebely J, 2023, 'Global, regional, and country-level coverage of testing and treatment for HIV and hepatitis C infection among people who inject drugs: a systematic review', Lancet Global Health, 11, pp. e1885 - e1898, http://dx.doi.org/10.1016/S2214-109X(23)00461-8

Gardner LA; Rowe AL; Stockings E; Champion KE; Hides L; McBride N; Allsop S; O’Dean S; Sunderland M; Lee YY; Mihalopoulos C; Freeman B; Leung J; McRobbie H; Stapinski L; Lee N; Thornton L; Debenham J; Teesson M; Newton NC, 2023, 'Study protocol of the Our Futures Vaping Trial: a cluster randomised controlled trial of a school-based eHealth intervention to prevent e-cigarette use among adolescents', BMC Public Health, 23, http://dx.doi.org/10.1186/s12889-023-15609-8

Rutherford BN; Lim CCW; Cheng B; Sun T; Vu GT; Johnson B; Daniel Paul Ashley ; Chung J; Huang S; Leung J; Stjepanović D; Connor JP; Chan GCK, 2023, 'Viral Vaping: A systematic review and meta analysis of e-cigarette and Tobacco-Related social media content and its influence on youth behaviours and attitudes', Addictive Behaviors, 147, http://dx.doi.org/10.1016/j.addbeh.2023.107828

Leung J; Price D; Bonsaksen T; Ruffolo M; Thygesen H; McClure-Thomas C; Schoultz M; Ostertun Geirdal A, 2023, 'Schooling-at-Home and Extra Child-Caring Responsibilities were Associated with Parental Mental Health, Psychosocial Well-Being, and Loneliness', Social Education Research, pp. 1 - 14, http://dx.doi.org/10.37256/ser.5120243332

Stjepanović D; Phartiyal P; Leung J; Lim CCW; Sun T; Chung JYC; Gartner CE; Hall WD; Chan GCK, 2023, 'Efficacy of smokeless tobacco for smoking cessation: A systematic review and meta-analysis', Tobacco Control, 32, pp. 757 - 768, http://dx.doi.org/10.1136/tobaccocontrol-2021-057019

Sun T; Vu G; Lim CCW; Johnson B; Stjepanović D; Leung J; Connor JP; Gartner C; Hall WD; Chan GCK, 2023, 'Longitudinal association between exposure to e-cigarette advertising and youth e-cigarette use in the United States', Addictive Behaviors, 146, http://dx.doi.org/10.1016/j.addbeh.2023.107810

Hall W; Stjepanović D; Dawson D; Leung J, 2023, 'The implementation and public health impacts of cannabis legalization in Canada: a systematic review', Addiction, 118, pp. 2062 - 2072, http://dx.doi.org/10.1111/add.16274

Leung J; Chiu V; Man N; Yuen WS; Dobbins T; Dunlop A; Gisev N; Hall W; Larney S; Pearson SA; Degenhardt L; Peacock A; Peacock A, 2023, 'All-cause and cause-specific mortality in individuals with an alcohol-related emergency or hospital inpatient presentation: A retrospective data linkage cohort study', Addiction, 118, pp. 1751 - 1762, http://dx.doi.org/10.1111/add.16218

Carlyle M; Walter ZC; Theroux B; Leung J; Hides L, 2023, 'Reliability of online self-report versions of the Australian Treatment Outcome Profile (ATOP) and Alcohol, Smoking, and Substance Involvement Screening Test (ASSIST) among people in residential treatment for substance use problems', Addictive Behaviors, 144, http://dx.doi.org/10.1016/j.addbeh.2023.107756

Sun T; Anandan A; Lim CCW; East K; Xu SS; Quah ACK; Rutherford BN; Johnson B; Qi Y; Stjepanovic D; Leung J; Connor JP; Gartner C; Hall WD; Vu G; Chan GCK, 2023, 'Global prevalence of heated tobacco product use, 2015–22: A systematic review and meta-analysis', Addiction, 118, pp. 1430 - 1444, http://dx.doi.org/10.1111/add.16199

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