Overview
Background
A/Prof Janni Leung (PhD) is an NHMRC Development Fellow at National Centre for Youth Substance Use Research (NCYSUR) at The University of Queensland. Their program of research includes investigating the epidemiology of substance use and mental health because they are both major public health issues that commonly occur together. This research program had made paradigm-changing development through 100+ articles, which have recognised impact (15,000+ cites, 30% output in the top 1% citation percentile). Many of their work involves conducting systematic reviews, meta-analyses, and applying statistical models to epidemiological data on addiction and mental health issues to better understand their impacts on populations. Her work is used to inform policies on how to reduce the disease burden caused by addiction and mental health problems in Australia and overseas. Janni is committed to conducting high-quality rigorous research to generate empirical epidemiological evidence to inform decisions to prevent addiction-related harms in the population.
Teaching and supervision: They have qualifications and training in public health, sociology, and psychology. In addition, they have strong research and teaching experience in epidemiology and biostatistics. Janni has worked with a range of students from diverse demographic and cultural backgrounds, including mature-aged students and students with family responsibilities. She currently has a topic available for a self-motivated student interested in addiction research. Janni’s current research focus is on the epidemiology and disease burden associated with mental and substance use disorders across the globe.
Consultation: Janni is available for private consultation and workshop presentations on request for various research methodological and statistical topics, e.g. systematic reviews and meta-analysis, questionnaire and survey designs, cross-sectional and longitudinal analyses.
Where can you find Janni: Janni is based at the UQ St Lucia campus with regular visits to the Long Pocket and Herston campuses. You may also catch Janni at the APSAD conference.
Availability
- Associate Professor Janni Leung is:
- Available for supervision
- Media expert
Fields of research
Qualifications
- Bachelor of Arts, The University of Queensland
- Bachelor of Health Sciences, The University of Queensland
- Doctor of Philosophy, The University of Queensland
Research interests
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Substance use, substance abuse, and substance dependence
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Mental health and mental disorders
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Epidemiology, public health
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Burden of disease
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Higher education
Works
Search Professor Janni Leung’s works on UQ eSpace
2022
Journal Article
Prevalence and self-reported reasons of cannabis use for medical purposes in USA and Canada
Leung, Janni, Chan, Gary, Stjepanović, Daniel, Chung, Jack Yiu Chak, Hall, Wayne and Hammond, David (2022). Prevalence and self-reported reasons of cannabis use for medical purposes in USA and Canada. Psychopharmacology, 239 (5), 1509-1519. doi: 10.1007/s00213-021-06047-8
2022
Journal Article
Comorbidity of mental and musculoskeletal disorders in ageing women: a data linkage study using national registries
Heikkinen, J., Koivumaa-Honkanen, H., Rauma, P., Williams, L. J., Quirk, S. E., Leung, J. and Honkanen, R. J. (2022). Comorbidity of mental and musculoskeletal disorders in ageing women: a data linkage study using national registries. Maturitas, 155, 63-69. doi: 10.1016/j.maturitas.2021.10.006
2022
Journal Article
The impact of eSports and online video gaming on lifestyle behaviours in youth: a systematic review
Chan, Gary, Huo, Yan, Kelly, Sarah, Leung, Janni, Tisdale, Calvert and Gullo, Matthew (2022). The impact of eSports and online video gaming on lifestyle behaviours in youth: a systematic review. Computers in Human Behavior, 126 106974, 1-16. doi: 10.1016/j.chb.2021.106974
2022
Journal Article
What is the short-term remission rate for people with untreated depression? A systematic review and meta-analysis
Mekonen, Tesfa, Ford, Sarah, Chan, Gary C. K., Hides, Leanne, Connor, Jason P. and Leung, Janni (2022). What is the short-term remission rate for people with untreated depression? A systematic review and meta-analysis. Journal of Affective Disorders, 296, 17-25. doi: 10.1016/j.jad.2021.09.046
2022
Other Outputs
Cannabis legalisation in Canada: a brief history, policy rationale, implementation, and evidence of early impacts
Hall, Wayne, Stjepanovic, Daniel and Leung, Janni (2022). Cannabis legalisation in Canada: a brief history, policy rationale, implementation, and evidence of early impacts. Brisbane, Australia: The University of Queensland. doi: 10.14264/a494332
2021
Journal Article
Age-related trends in cannabis use in Australia. Findings from a series of large nationally representative surveys
Chan, Gary, Chiu, Vivian, Sun, Tianze, Connor, Jason P., Hall, Wayne D. and Leung, Janni (2021). Age-related trends in cannabis use in Australia. Findings from a series of large nationally representative surveys. Addictive Behaviors, 123 107059. doi: 10.1016/j.addbeh.2021.107059
2021
Journal Article
Has increased youth e-cigarette use in the USA, between 2014 and 2020, changed conventional smoking behaviors, future intentions to smoke and perceived smoking harms?
Sun, Tianze, Lim, Carmen C. W., Stjepanović, Daniel, Leung, Janni, Connor, Jason P., Gartner, Coral, Hall, Wayne D. and Chan, Gary C.K. (2021). Has increased youth e-cigarette use in the USA, between 2014 and 2020, changed conventional smoking behaviors, future intentions to smoke and perceived smoking harms?. Addictive Behaviors, 123 107073, 107073. doi: 10.1016/j.addbeh.2021.107073
2021
Journal Article
Estimating the global treatment rates for depression: a systematic review and meta-analysis
Mekonen, Tesfa, Chan, Gary C.K., Connor, Jason P., Hides, Leanne and Leung, Janni (2021). Estimating the global treatment rates for depression: a systematic review and meta-analysis. Journal of Affective Disorders, 295, 1234-1242. doi: 10.1016/j.jad.2021.09.038
2021
Journal Article
Willingness to take the COVID-19 vaccine as reported nine months after the pandemic outbreak: a cross-national study
Price, Daicia, Bonsaksen, Tore, Ruffolo, Mary, Leung, Janni, Thygesen, Hilde, Schoultz, Mariyana and Geirdal, Amy Ostertun (2021). Willingness to take the COVID-19 vaccine as reported nine months after the pandemic outbreak: a cross-national study. Social Sciences, 10 (11) 442, 1-9. doi: 10.3390/socsci10110442
2021
Conference Publication
Prevalence of adolescent cannabis vaping: a systematic review and meta-analysis of studies from the US and Canada
Lim, Carmen C.W., Sun, Tianze, Leung, Janni, Chung, Jack Y.C., Gartner, Coral, Connor, Jason P., Hall, Wayne, Chiu, Vivian, Stjepanovic, Daniel and Chan, Gary (2021). Prevalence of adolescent cannabis vaping: a systematic review and meta-analysis of studies from the US and Canada. APSAD Scientific Drug and Alcohol Conference, Virtual, 7-10 November 2021. Chichester, West Sussex, United Kingdom: Wiley-Blackwell.
2021
Conference Publication
Patterns of cannabis and tobacco use in Australia: latent class analysis and health-rated correlates
Lim, Carmen C.W., Leung, Janni, Sun, Tianze, Chiu, Vivian, Stjepanovic, Daniel, Chung, Jack Y.C., Connor, Jason P., Hall, Wayne, Scheurer, Roman, Gartner, Coral and Chan, Gary (2021). Patterns of cannabis and tobacco use in Australia: latent class analysis and health-rated correlates. APSAD Scientific Drug and Alcohol Conference, Virtual, 7-10 November 2021. Chichester, West Sussex, United Kingdom: Wiley-Blackwell.
2021
Journal Article
Utilising data linkage to describe and explore mortality among a retrospective cohort of individuals admitted to residential substance use treatment
Tisdale, Calvert, de Andrade, Dominique, Leung, Janni, Chiu, Vivian and Hides, Leanne (2021). Utilising data linkage to describe and explore mortality among a retrospective cohort of individuals admitted to residential substance use treatment. Drug and Alcohol Review, 40 (7), 1202-1206. doi: 10.1111/dar.13279
2021
Conference Publication
A network meta-analysis of randomised controlled trial evaluating the effectiveness of e-cigarettes in smoking cessation
Stjepanovic, Daniel, Chan, Gary C. K., Lim, Carmen C. W., Sun, Tianze, Anandan, Aathavan Shanmuga, Connor, Jason P., Gartner, Coral, Hall, Wayne D. and Leung, Janni (2021). A network meta-analysis of randomised controlled trial evaluating the effectiveness of e-cigarettes in smoking cessation. APSAD 2021 Conference, Virtual, 7-10 November 2021. Chichester, West Sussex, United Kingdom: Wiley-Blackwell Publishing.
2021
Conference Publication
Keep it Real: a web-based randomised controlled trial for reducing cannabis use and psychotic experiences in young people
Hides, Leanne, Leung, Janni, Newland, Grace, Baker, Amanda L., Norberg, Melissa, Copeland, Jan, Quinn, Catherine A., Walter, Zoe C., Stoyanov, Stoyan and Kavanagh, David (2021). Keep it Real: a web-based randomised controlled trial for reducing cannabis use and psychotic experiences in young people. APSAD 2021 Conference, Virtual, 7-10 November 2021. Chichester, West Sussex, United Kingdom: Wiley-Blackwell Publishing.
2021
Conference Publication
Patient characteristics and psychological factors as predictors of treatment completion in residential substance use treatment
Tisdale, Calvert, Leung, Janni, de Andrade, Dominique and Hides, Leanne (2021). Patient characteristics and psychological factors as predictors of treatment completion in residential substance use treatment. APSAD 2021 Conference, Online, 7–10 November 2021. Chichester, West Sussex United Kingdom: Wiley-Blackwell Publishing. doi: 10.1111/dar.13384
2021
Conference Publication
Symposium: epidemiology and potential public health benefits and harms of vaping - implication to tobacco control policies
Chan, Gary C. K., Sun, Tianze, Lim, Carmen C. W., Morphett, Kylie, Stjepanovic, Daniel, Chung, Jack Y. C., Chiu, Vivian, Connor, Jason P., Gartner, Coral, Hall, Wayne D. and Leung, Janni (2021). Symposium: epidemiology and potential public health benefits and harms of vaping - implication to tobacco control policies. APSAD 2021 Conference, Virtual, 7-10 November 2021. Chichester, West Sussex, United Kingdom: Wiley-Blackwell Publishing.
2021
Conference Publication
A cross-sectional and longitudinal analysis of substance use behaviours and emotional wellbeing in Australian senior high school students living through the COVID-19 pandemic
Quinn, Catherine A., Leung, Janni, Carlyle, Molly, Ellem, Rhiannon, Tisdale, Calvert, Davidson, Lily, White, Melanie, Kavanagh, David and Hides, Leanne (2021). A cross-sectional and longitudinal analysis of substance use behaviours and emotional wellbeing in Australian senior high school students living through the COVID-19 pandemic. APSAD 2021 Conference, Online, 7–10 November 2021. Chichester, West Sussex United Kingdom: Wiley-Blackwell.
2021
Conference Publication
A meta-analysis of the efficacy of smokeless tobacco for smoking cessation
Stjepanovic, Daniel, Leung, Janni, Lim, Carmen C. W., Sun, Tianze, Chung, Jack Y. C., Phartiyal, Preeti, Gartner, Coral, Hall, Wayne D. and Chan, Gary C. K. (2021). A meta-analysis of the efficacy of smokeless tobacco for smoking cessation. APSAD 2021 Conference, Virtual, 7-10 November 2021. Chichester, West Sussex, United Kingdom: Wiley-Blackwell Publishing.
2021
Conference Publication
How many people use cannabis for medicinal reasons in Australia?
Leung, Janni, Lim, Carmen C. W., Chiu, Vivian, Chung, Jack Y. C., Mekonen, Tesfa, Hall, Wayne D. and Chan, Gary C. K. (2021). How many people use cannabis for medicinal reasons in Australia?. APSAD 2021 Conference, Virtual, 7-10 November 2021. Chichester, West Sussex, United Kingdom: Wiley-Blackwell.
2021
Conference Publication
The impact of the COVID-19 pandemic on alcohol and other drug staff, clients and services
Carlyle, Molly, Leung, Janni, Newland, Grace, Walter, Zoe C., Quinn, Catherine A., Morris, Leith, Tisdale, Calvert, Ellem, Rhiannon and Hides, Leanne (2021). The impact of the COVID-19 pandemic on alcohol and other drug staff, clients and services. APSAD 2021 Conference, Online, 7–10 November 2021. Chichester, West Sussex United Kingdom: Wiley-Blackwell.
Funding
Current funding
Past funding
Supervision
Availability
- Associate Professor Janni Leung is:
- Available for supervision
Before you email them, read our advice on how to contact a supervisor.
Available projects
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Available Dissertation and Thesis Topics (No International Scholarships Available)
How to apply – Send your CV, academic transcript, and cover letter to <j.leung1@uq.edu.au>
- Epidemiology of mental and substance use disorders
- Harmful alcohol use and alcohol use disorders
- Video gaming addiction in youth and across different population groups
- Smoking in South-East Asia
- Substance use treatment service use
- Cost-effectiveness of addiction interventions
*Propose your own topics. Research projects would be suitable to those:
- Highly motivated, proactive, and self-directed
- Strong written and oral communication skills
- Has completed or is enrolled to complete the UQ library workshop on systematic reviews and database searching
- Able to travel to St Lucia, The University of Queensland
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Areas of RHD supervision
- Psychiatry epidemiology
- Alcohol use disorders
- Alcohol drinking behavior
- Tobacco smoking
- Gaming addiction
- Video game play behaviours
- Injecting drug use
- Person who inject drugs
- Substance use
- Substance dependence
- Substance abuse
- Drug use disorders
- Amphetamine / methamphetamine
- Cocaine / Heroin
- Marijuana / Cannabis
- Psycho-stimulants
- Mental health and mental disorders
- Depression & anxiety
- Public attitudes
- Burden of disease
- Treatment rates and treatment gaps
- Risk factors and outcomes of substance use
- Systematic reviews and meta-analyses
Supervision history
Current supervision
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Doctor Philosophy
Adolescent exposure to online cannabis advertisements
Principal Advisor
Other advisors: Professor Jason Connor, Associate Professor Gary Chung Kai Chan, Dr Tesfa Yimer
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Doctor Philosophy
Medicinal Cannabis Use in Australia
Principal Advisor
Other advisors: Emeritus Professor Wayne Hall, Dr Daniel Stjepanovic
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Doctor Philosophy
Enhancing self-confidence in school-aged adolescents for prevention impulsive behaviors (substance addiction, risky sexual behavior, gambling and internet addiction) and mental illnesses
Principal Advisor
Other advisors: Associate Professor Gary Chung Kai Chan, Professor Leanne Hides, Dr Carmen Lim
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Doctor Philosophy
Learning from the opioid crisis - Preventing the proliferation of prescription stimulant for non-medical use
Associate Advisor
Other advisors: Emeritus Professor Wayne Hall, Dr Daniel Stjepanovic, Associate Professor Gary Chung Kai Chan, Dr Natalie Thomas
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Doctor Philosophy
Evaluating the Public Health Impacts of Vaping Product Use
Associate Advisor
Other advisors: Professor Jason Connor, Emeritus Professor Wayne Hall, Professor Coral Gartner, Associate Professor Gary Chung Kai Chan
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Doctor Philosophy
Social media and substance use among young people
Associate Advisor
Other advisors: Professor Jason Connor, Dr Daniel Stjepanovic, Associate Professor Gary Chung Kai Chan
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Doctor Philosophy
Impacts of Cannabis Use and Cannabis Vaping - Insight into Australian Cannabis Policies
Associate Advisor
Other advisors: Emeritus Professor Wayne Hall, Dr Daniel Stjepanovic, Associate Professor Gary Chung Kai Chan
Completed supervision
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2024
Doctor Philosophy
Utilisation of data linkage to determine the long-term health and substance use outcomes of residential substance use treatment
Principal Advisor
Other advisors: Professor Leanne Hides, Dr Dominique De Andrade
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2023
Doctor Philosophy
Mental health services in low resource settings: Treatment gap, service utilization, and barriers to mental health service use
Principal Advisor
Other advisors: Associate Professor Gary Chung Kai Chan, Professor Leanne Hides
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2023
Doctor Philosophy
Cannabis Legalisation: An Empirical Analysis Causes of Attitudinal Change in the U.S. and Australia
Principal Advisor
Other advisors: Emeritus Professor Wayne Hall, Associate Professor Gary Chung Kai Chan, Professor Leanne Hides
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2023
Doctor Philosophy
Emerging trends of cannabis vaping in the USA and Canada: Prevalence, correlates, and online presence
Associate Advisor
Other advisors: Professor Jason Connor, Emeritus Professor Wayne Hall, Dr Daniel Stjepanovic, Professor Coral Gartner, Associate Professor Gary Chung Kai Chan
Media
Enquiries
Contact Associate Professor Janni Leung directly for media enquiries about:
- Disease burden
- Mental health
- Substance abuse
- Substance dependence
- Substance use
Need help?
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