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
2019
Journal Article
Alcohol consumption and consequences in adolescents in 68 low and middle-income countries – a multi-country comparison of risks by sex
Leung, Janni, Chiu, Vivian, Connor, Jason P., Peacock, Amy, Kelly, Adrian B., Hall, Wayne and Chan, Gary C. K. (2019). Alcohol consumption and consequences in adolescents in 68 low and middle-income countries – a multi-country comparison of risks by sex. Drug and Alcohol Dependence, 205 107520, 1-9. doi: 10.1016/j.drugalcdep.2019.06.022
2019
Journal Article
What have been the public health impacts of cannabis legalisation in the USA? A review of evidence on adverse and beneficial effects
Leung, Janni, Chiu, Vivian, Chan, Gary C. K., Stjepanović, Daniel and Hall, Wayne D. (2019). What have been the public health impacts of cannabis legalisation in the USA? A review of evidence on adverse and beneficial effects. Current Addiction Reports, 6 (4), 418-428. doi: 10.1007/s40429-019-00291-x
2019
Conference Publication
Characterising people attending new south wales emergency departments and hospitals for an alcohol-related problem, 2005-2014: The data-linkage alcohol cohort study
Peacock, Amy, Chiu, Vivian, Leung, Janni, Dobbins, Timothy, Larney, Sarah, Gisev, Natasa, Pearson, Sallie-Anne, Dunlop, Adrian J. and Degenhardt, Louisa (2019). Characterising people attending new south wales emergency departments and hospitals for an alcohol-related problem, 2005-2014: The data-linkage alcohol cohort study. APSAD 2019 Conference, Hobart, TAS Australia, 10–13 November 2019. Chichester, West Sussex United Kingdom: Wiley-Blackwell.
2019
Conference Publication
Frequency of injecting among people who inject drugs: A systematic review and meta-analysis
Colledge, Samantha, Leung, Janni, Larney, Sarah, Peacock, Amy, Grebely, Jason, Hickman, Matthew, Cunningham, Evan B., Trickey, Adam, Stone, Jack, Vickerman, Peter and Degenhardt, Louisa (2019). Frequency of injecting among people who inject drugs: A systematic review and meta-analysis. APSAD 2019 Conference, Hobart, TAS Australia, 10–13 November 2019. Chichester, West Sussex United Kingdom: Wiley-Blackwell.
2019
Conference Publication
Mental health consequences of methamphetamine use: A systematic review and meta-analysis
McKetin, Rebecca, Leung, Janni, Stockings, Emily, Huo, Phoebe, Foulds, James, Lappin, Julia, Cumming, Craig, Arunogiri, Shalini, Young, Jesse, Sara, Grant, Farrell, Michael and Degenhardt, Louisa (2019). Mental health consequences of methamphetamine use: A systematic review and meta-analysis. APSAD 2019 Conference, Hobart, TAS Australia, 10–13 November 2019. Chichester, West Sussex United Kingdom: Wiley-Blackwell.
2019
Journal Article
Public health implications of legalising the production and sale of cannabis for medicinal and recreational use
Hall, Wayne, Stjepanović, Daniel, Caulkins, Jonathan, Lynskey, Michael, Leung, Janni, Campbell, Gabrielle and Degenhardt, Louisa (2019). Public health implications of legalising the production and sale of cannabis for medicinal and recreational use. The Lancet, 394 (10208), 1580-1590. doi: 10.1016/s0140-6736(19)31789-1
2019
Journal Article
Burden of non-communicable diseases in sub-Saharan Africa, 1990–2017: results from the Global Burden of Disease Study 2017
Gouda, Hebe N., Charlson, Fiona, Sorsdahl, Katherine, Ahmadzada, Sanam, Ferrari, Alize J., Erskine, Holly, Leung, Janni, Santamauro, Damian, Lund, Crick, Aminde, Leopold Ndemnge, Mayosi, Bongani M., Kengne, Andre Pascal, Harris, Meredith, Achoki, Tom, Wiysonge, Charles S., Stein, Dan J. and Whiteford, Harvey (2019). Burden of non-communicable diseases in sub-Saharan Africa, 1990–2017: results from the Global Burden of Disease Study 2017. The Lancet Global Health, 7 (10), e1375-e1387. doi: 10.1016/s2214-109x(19)30374-2
2019
Conference Publication
Childhood-onset mental disorders in six regions of China: a systematic review and meta-analysis of the prevalence and data coverage of attention deficit hyperactivity disorder, conduct disorder, and autism spectrum disorders
Huo, Yan, Bao, Yanping, Scheurer, Roman W. and Leung, Janni (2019). Childhood-onset mental disorders in six regions of China: a systematic review and meta-analysis of the prevalence and data coverage of attention deficit hyperactivity disorder, conduct disorder, and autism spectrum disorders. The Lancet-CAMS Health Summit, 2019, Chengdu, China, 19-20 October 2019. London, United Kingdom: The Lancet Publishing Group. doi: 10.1016/s0140-6736(19)32367-0
2019
Journal Article
Depressive disorders, anxiety disorders and subjective mental health in common musculoskeletal diseases: A review
Heikkinen, Jeremi, Honkanen, Risto, Williams, Lana, Leung, Janni, Rauma, Päivi, Quirk, Shae and Koivumaa-Honkanen, Heli (2019). Depressive disorders, anxiety disorders and subjective mental health in common musculoskeletal diseases: A review. Maturitas, 127, 18-25. doi: 10.1016/j.maturitas.2019.05.011
2019
Journal Article
Modelling the potential prevention benefits of a treat-all hepatitis C treatment strategy at global, regional and country levels: a modelling study
Trickey, Adam, Fraser, Hannah, Lim, Aaron G., Walker, Josephine G., Peacock, Amy, Colledge, Samantha, Leung, Janni, Grebely, Jason, Larney, Sarah, Martin, Natasha K., Degenhardt, Louisa, Hickman, Matthew, May, Margaret T. and Vickerman, Peter (2019). Modelling the potential prevention benefits of a treat-all hepatitis C treatment strategy at global, regional and country levels: a modelling study. Journal of Viral Hepatitis, 26 (12) jvh.13187, 1388-1403. doi: 10.1111/jvh.13187
2019
Journal Article
Research protocol for a randomized controlled trial of Keep it Real, a web-based program for cannabis use and psychotic experiences in young people
Hides, Leanne, Baker, Amanda, Norberg, Melissa, Copeland, Jan, Quinn, Catherine, Walter, Zoe, Leung, Janni, Stoyanov, Stoyan R. and Kavanagh, David (2019). Research protocol for a randomized controlled trial of Keep it Real, a web-based program for cannabis use and psychotic experiences in young people. JMIR Research Protocols, 9 (7) e15803, e15803. doi: 10.2196/15803
2019
Journal Article
Protocol for the Data-Linkage Alcohol Cohort Study (DACS): investigating mortality, morbidity and offending among people with an alcohol-related problem using linked administrative data
Peacock, Amy, Chiu, Vivian, Leung, Janni, Dobbins, Timothy, Larney, Sarah, Gisev, Natasa, Pearson, Sallie-Anne and Degenhardt, Louisa (2019). Protocol for the Data-Linkage Alcohol Cohort Study (DACS): investigating mortality, morbidity and offending among people with an alcohol-related problem using linked administrative data. BMJ Open, 9 (8) e030605, e030605. doi: 10.1136/bmjopen-2019-030605
2019
Journal Article
Prevalence of HIV, HCV and HBV infection and sociodemographic characteristics of people who inject drugs in China: a systematic review and meta-analysis
Bao, Yanping, Larney, Sarah, Peacock, Amy, Colledge, Samantha, Grebely, Jason, Hickman, Matthew, Degenhardt, Louisa and Leung, Janni (2019). Prevalence of HIV, HCV and HBV infection and sociodemographic characteristics of people who inject drugs in China: a systematic review and meta-analysis. International Journal of Drug Policy, 70, 87-93. doi: 10.1016/j.drugpo.2019.05.005
2019
Journal Article
Correlates of electronic cigarette use in the general population and among smokers in Australia – findings from a nationally representative survey
Chan, Gary, Leung, Janni, Gartner, Coral, Yong, Hua-Hie, Borland, Ron and Hall, Wayne (2019). Correlates of electronic cigarette use in the general population and among smokers in Australia – findings from a nationally representative survey. Addictive Behaviors, 95, 6-10. doi: 10.1016/j.addbeh.2019.02.012
2019
Journal Article
The changing patterns and correlates of population‐level polysubstance use in Australian youth: a multi‐group latent class analysis of nationally representative samples spanning 12 years
Chan, Gary, Connor, Jason, Hall, Wayne and Leung, Janni (2019). The changing patterns and correlates of population‐level polysubstance use in Australian youth: a multi‐group latent class analysis of nationally representative samples spanning 12 years. Addiction, 115 (1) add.14761, 145-155. doi: 10.1111/add.14761
2019
Journal Article
The prevalence of non-fatal overdose among people who inject drugs: a multi-stage systematic review and meta-analysis
Colledge, Samantha, Peacock, Amy, Leung, Janni, Larney, Sarah, Grebely, Jason, Hickman, Matthew, Cunningham, Evan, Trickey, Adam, Stone, Jack, Vickerman, Peter and Degenhardt, Louisa (2019). The prevalence of non-fatal overdose among people who inject drugs: a multi-stage systematic review and meta-analysis. International Journal of Drug Policy, 73, 172-184. doi: 10.1016/j.drugpo.2019.07.030
2019
Journal Article
Erratum: Global, regional, and national comparative risk assessment of 84 behavioural, environmental and occupational, and metabolic risks or clusters of risks for 195 countries and territories, 1990–2017: a systematic analysis for the Global Burden of Disease Study 2017 (The Lancet (2018) 392(10159) (1923–1994), (S0140673618322256), (10.1016/S0140-6736(18)32225-6))
Stanaway, Jeffrey D., Afshin, Ashkan, Gakidou, Emmanuela, Lim, Stephen S., Abate, Degu, Abate, Kalkidan Hassen, Abbafati, Cristiana, Abbasi, Nooshin, Abbastabar, Hedayat, Abd-Allah, Foad, Abdela, Jemal, Abdelalim, Ahmed, Abdollahpour, Ibrahim, Abdulkader, Rizwan Suliankatchi, Abebe, Molla, Abebe, Zegeye, Abera, Semaw F., Abil, Olifan Zewdie, Abraha, Haftom Niguse, Abrham, Aklilu Roba, Abu-Raddad, Laith Jamal, Abu-Rmeileh, Niveen M.E., Accrombessi, Manfred Mario Kokou, Acharya, Dilaram, Acharya, Pawan, Adamu, Abdu A., Adane, Akilew Awoke, Adebayo, Oladimeji M., Adedoyin, Rufus Adesoji ... Murray, Christopher J.L. (2019). Erratum: Global, regional, and national comparative risk assessment of 84 behavioural, environmental and occupational, and metabolic risks or clusters of risks for 195 countries and territories, 1990–2017: a systematic analysis for the Global Burden of Disease Study 2017 (The Lancet (2018) 392(10159) (1923–1994), (S0140673618322256), (10.1016/S0140-6736(18)32225-6)). The Lancet, 393 (10190). doi: 10.1016/S0140-6736(19)31429-1
2019
Journal Article
Temperament and character profiles of medical students associated with tolerance of ambiguity and perfectionism
Leung, Janni, Cloninger, C. Robert, Hong, Barry A., Cloninger, Kevin M. and Eley, Diann S. (2019). Temperament and character profiles of medical students associated with tolerance of ambiguity and perfectionism. PeerJ, 7 (6) 7:e7109, e7109. doi: 10.7717/peerj.7109
2019
Journal Article
A Global Meta-analysis of the Prevalence of HIV, Hepatitis C Virus, and Hepatitis B Virus among People Who Inject Drugs - Do Gender-Based Differences Vary by Country-Level Indicators?
Leung, Janni, Peacock, Amy, Colledge, Samantha, Grebely, Jason, Cunningham, Evan B., Hickman, Matthew, Vickerman, Peter, Stone, Jack, Trickey, Adam, Dumchev, Kostyantyn, Lynskey, Michael, Hines, Lindsey, Griffiths, Paul, Mattick, Richard P., Degenhardt, Louisa and Larney, Sarah (2019). A Global Meta-analysis of the Prevalence of HIV, Hepatitis C Virus, and Hepatitis B Virus among People Who Inject Drugs - Do Gender-Based Differences Vary by Country-Level Indicators?. Journal of Infectious Diseases, 220 (1) jiz058, 78-90. doi: 10.1093/infdis/jiz058
2019
Journal Article
The contribution of injection drug use to hepatitis C virus transmission globally, regionally, and at country level: a modelling study
Trickey, Adam, Fraser, Hannah, Lim, Aaron G, Peacock, Amy, Colledge, Samantha, Walker, Josephine G, Leung, Janni, Grebely, Jason, Larney, Sarah, Martin, Natasha K, Hickman, Matthew, Degenhardt, Louisa, May, Margaret T and Vickerman, Peter (2019). The contribution of injection drug use to hepatitis C virus transmission globally, regionally, and at country level: a modelling study. The Lancet Gastroenterology and Hepatology, 4 (6), 435-444. doi: 10.1016/S2468-1253(19)30085-8
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
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
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
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
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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
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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