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 200+ 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 data analysis 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.
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
Predicting vaping uptake, vaping frequency and ongoing vaping among daily smokers using longitudinal data from the International Tobacco Control (ITC) Four Country Surveys
Chan, Gary, Morphett, Kylie, Gartner, Coral, Leung, Janni, Yong, Hua-Hie, Hall, Wayne and Borland, Ron (2019). Predicting vaping uptake, vaping frequency and ongoing vaping among daily smokers using longitudinal data from the International Tobacco Control (ITC) Four Country Surveys. Addiction, 114 Suppl 1 (S1) add.14537, 61-70. doi: 10.1111/add.14537
2019
Journal Article
Depression and anxiety in relation to cancer incidence and mortality: a systematic review and meta-analysis of cohort studies
Wang, Yun-He, Li, Jin-Qiao, Shi, Ju-Fang, Que, Jian-Yu, Liu, Jia-Jia, Lappin, Julia M., Leung, Janni, Ravindran, Arun V., Chen, Wan-Qing, Qiao, You-Lin, Shi, Jie, Lu, Lin and Bao, Yan-Ping (2019). Depression and anxiety in relation to cancer incidence and mortality: a systematic review and meta-analysis of cohort studies. Molecular Psychiatry, 25 (7), 1487-1499. doi: 10.1038/s41380-019-0595-x
2019
Conference Publication
Personal correlates of support for medical cannabis legalisation in Australia
Chiu, Vivian, Leung, Janni, Chan, Gary C. K., Hall, Wayne D. and Hides, Leanne (2019). Personal correlates of support for medical cannabis legalisation in Australia. APSAD 2019 Conference, Hobart, TAS Australia, 10–13 November 2019. Chichester, West Sussex United Kingdom: Wiley-Blackwell.
2019
Conference Publication
What risk do cannabis users run of developing cannabis use disorders? A systematic review and meta-analysis
Leung, Janni, Chan, Gary C. K., Hides, Leanne and Hall, Wayne D. (2019). What risk do cannabis users run of developing cannabis use disorders? 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
Childhood-onset Mental Disorders in 6 geographical regions in China: A Systematic Review and Meta-analysis on Attention Deficit Hyperactivity Disorder, Conduct Disorder, Autism Spectrum Disorder, and Autistic Disorder
Huo, Y. P, Bao, Y, Scheurer, R. W. and Leung, J. (2019). Childhood-onset Mental Disorders in 6 geographical regions in China: A Systematic Review and Meta-analysis on Attention Deficit Hyperactivity Disorder, Conduct Disorder, Autism Spectrum Disorder, and Autistic Disorder. 5th International Conference on Youth Mental Health, Brisbane, QLD Australia, 30 June - 2 July 2019.
2019
Journal Article
GBD 2016 Alcohol and Drug Use Collaborators (vol 5, pg 987, 2018)
Degenhardt, Louisa, Charlson, Fiona, Ferrari, Alize, Santomauro, Damian, Erskine, Holly, Mantilla-Herrara, Ana, Whiteford, Harvey, Leung, Janni, Naghavi, Mohsen, Griswold, Max, Rehm, Juegen, Hall, Wayne, Sartorius, Benn, Scott, James, Vollset, Stein Emil, Knudsen, Ann Kristin, Maria Haro, Josep, Patton, George, Kopec, Jacek, Malta, Deborah Carvalho, Topor-Madry, Roman, McGrath, John, Haagsma, Juanita, Allebeck, Peter, Phillips, Michael, Salomon, Joshua, Hay, Simon, Foreman, Kyle, Lim, Stephen ... Vos, Theo (2019). GBD 2016 Alcohol and Drug Use Collaborators (vol 5, pg 987, 2018). Lancet Psychiatry, 6 (1), E2-E2. doi: 10.1016/S2215-0366(18)30488-7
2018
Journal Article
Has the legalisation of medical and recreational cannabis use in the USA affected the prevalence of cannabis use and cannabis use disorders?
Leung, Janni, Chiu, Chui Ying Vivian, Stjepanović, Daniel and Hall, Wayne (2018). Has the legalisation of medical and recreational cannabis use in the USA affected the prevalence of cannabis use and cannabis use disorders?. Current Addiction Reports, 5 (4), 403-417. doi: 10.1007/s40429-018-0224-9
2018
Journal Article
Measuring progress from 1990 to 2017 and projecting attainment to 2030 of the health-related Sustainable Development Goals for 195 countries and territories: a systematic analysis for the Global Burden of Disease Study 2017
Lozano, Rafael, Fullman, Nancy, Abate, Degu, Abay, Solomon M., Abbafati, Cristiana, Abbasi, Nooshin, Abbastabar, Hedayat, Abd-Allah, Foad, Abdela, Jemal, Abdelalim, Ahmed, Abdel-Rahman, Omar, Abdi, Alireza, Abdollahpour, Ibrahim, Abdulkader, Rizwan Suliankatchi, Abebe, Nebiyu Dereje, Abebe, Zegeye, Abejie, Ayenew Negesse, Abera, Semaw F., Abil, Olifan Zewdie, Aboyans, Victor, Abraha, Haftom Niguse, Abrham, Aklilu Roba, Abu-Raddad, Laith Jamal, Abu-Rmeileh, Niveen Me, Abyu, Gebre Y., Accrombessi, Manfred Mario Kokou, Acharya, Dilaram, Acharya, Pawan, Adamu, Abdu A. ... Murray, Christopher J. L. (2018). Measuring progress from 1990 to 2017 and projecting attainment to 2030 of the health-related Sustainable Development Goals for 195 countries and territories: a systematic analysis for the Global Burden of Disease Study 2017. The Lancet, 392 (10159), 2091-2138. doi: 10.1016/s0140-6736(18)32281-5
2018
Journal Article
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
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. (2018). 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, 392 (10159), 1923-1994. doi: 10.1016/s0140-6736(18)32225-6
2018
Journal Article
Global, regional, and national disability-adjusted life-years (DALYs) for 359 diseases and injuries and healthy life expectancy (HALE) for 195 countries and territories, 1990–2017: a systematic analysis for the Global Burden of Disease Study 2017
Kyu, Hmwe Hmwe, Abate, Degu, Abate, Kalkidan Hassen, Abay, Solomon M, Abbafati, Cristiana, Abbasi, Nooshin, Abbastabar, Hedayat, Abd-Allah, Foad, Abdela, Jemal, Abdelalim, Ahmed, Abdollahpour, Ibrahim, Abdulkader, Rizwan Suliankatchi, Abebe, Molla, Abebe, Zegeye, Abil, Olifan Zewdie, Aboyans, Victor, Abrham, Aklilu Roba, Abu-Raddad, Laith Jamal, Abu-Rmeileh, Niveen M E, Accrombessi, Manfred Mario Kokou, Acharya, Dilaram, Acharya, Pawan, Ackerman, Ilana N, Adamu, Abdu A, Adebayo, Oladimeji M, Adekanmbi, Victor, Ademi, Zanfina, Adetokunboh, Olatunji O, Adib, Mina G ... GBD 2017 DALYs and HALE Collaborators (2018). Global, regional, and national disability-adjusted life-years (DALYs) for 359 diseases and injuries and healthy life expectancy (HALE) for 195 countries and territories, 1990–2017: a systematic analysis for the Global Burden of Disease Study 2017. The Lancet, 392 (10159), 1859-1922. doi: 10.1016/s0140-6736(18)32335-3
2018
Journal Article
The global burden of disease attributable to alcohol and drug use in 195 countries and territories, 1990-2016: a systematic analysis for the Global Burden of Disease Study 2016
GBD 2016 Alcohol and Drug Use Collaborators, Scott, James Graham, Ferrari, Alize, Charlson, Fiona, Santomauro, D., Erskine, Holly, Mantilla Herrera, Ana Maria, Whiteford, Harvey, Hall, Wayne, McGrath, John, Leung, Janni and Sartorius, Benn (2018). The global burden of disease attributable to alcohol and drug use in 195 countries and territories, 1990-2016: a systematic analysis for the Global Burden of Disease Study 2016. The Lancet Psychiatry, 5 (12), 987-1012. doi: 10.1016/S2215-0366(18)30337-7
2018
Journal Article
Global, regional, and national incidence, prevalence, and years lived with disability for 354 diseases and injuries for 195 countries and territories, 1990–2017: a systematic analysis for the Global Burden of Disease Study 2017
James, Spencer L, Abate, Degu, Abate, Kalkidan Hassen, Abay, Solomon M, Abbafati, Cristiana, Abbasi, Nooshin, Abbastabar, Hedayat, Abd-Allah, Foad, Abdela, Jemal, Abdelalim, Ahmed, Abdollahpour, Ibrahim, Abdulkader, Rizwan Suliankatchi, Abebe, Zegeye, Abera, Semaw F, Abil, Olifan Zewdie, Abraha, Haftom Niguse, Abu-Raddad, Laith Jamal, Abu-Rmeileh, Niveen M E, Accrombessi, Manfred Mario Kokou, Acharya, Dilaram, Acharya, Pawan, Ackerman, Ilana N, Adamu, Abdu A, Adebayo, Oladimeji M, Adekanmbi, Victor, Adetokunboh, Olatunji O, Adib, Mina G, Adsuar, Jose C, Afanvi, Kossivi Agbelenko ... Murray, Christopher J L (2018). Global, regional, and national incidence, prevalence, and years lived with disability for 354 diseases and injuries for 195 countries and territories, 1990–2017: a systematic analysis for the Global Burden of Disease Study 2017. The Lancet, 392 (10159), 1789-1858. doi: 10.1016/s0140-6736(18)32279-7
2018
Journal Article
Alcohol use and burden for 195 countries and territories, 1990-2016: a systematic analysis for the Global Burden of Disease Study 2016
Griswold, Max G., Fullman, Nancy, Hawley, Caitlin, Arian, Nicholas, Zimsen, Stephanie R. M., Tymeson, Hayley D., Venkateswaran, Vidhya, Tapp, Austin Douglas, Forouzanfar, Mohammad H., Salama, Joseph S., Abate, Kalkidan Hassen, Abate, Degu, Abay, Solomon M., Abbafati, Cristiana, Abdulkader, Rizwan Suliankatchi, Abebe, Zegeye, Aboyans, Victor, Abrar, Mohammed Mehdi, Acharya, Pawan, Adetokunboh, Olatunji O., Adhikari, Tara Ballav, Adsuar, Jose C., Afarideh, Mohsen, Agardh, Emilie Elisabet, Agarwal, Gina, Aghayan, Sargis Aghasi, Agrawal, Sutapa, Ahmed, Muktar Beshir, Akibu, Mohammed ... Gakidou, Emmanuela (2018). Alcohol use and burden for 195 countries and territories, 1990-2016: a systematic analysis for the Global Burden of Disease Study 2016. Lancet, 392 (10152), 1015-1035. doi: 10.1016/S0140-6736(18)31310-2
2018
Journal Article
Familial alcohol supply, adolescent drinking and early alcohol onset in 45 low and middle income countries
Chan, Gary C. K., Leung, Janni, Kelly, Adrian B., Connor, Jason, Edward, Stephanie, Hall, Wayne, Degenhardt, Louisa, Chiu, Vivian and Patton, George (2018). Familial alcohol supply, adolescent drinking and early alcohol onset in 45 low and middle income countries. Addictive Behaviors, 84, 178-185. doi: 10.1016/j.addbeh.2018.04.014
2018
Journal Article
Global, regional, and country-level estimates of hepatitis C infection among people who have recently injected drugs
Grebely, Jason, Larney, Sarah, Peacock, Amy, Colledge, Samantha, Leung, Janni, Hickman, Matthew, Vickerman, Peter, Blach, Sarah, Cunningham, Evan, Dumchev, Konstantin, Lynskey, Michael, Stone, Jack, Trickey, Adam, Razavi, Homie, Mattick, Richard P., Farrell, Michael, Dore, Gregory J. and Degenhardt, Louisa (2018). Global, regional, and country-level estimates of hepatitis C infection among people who have recently injected drugs. Addiction, 114 (1), 150-166. doi: 10.1111/add.14393
2018
Journal Article
Measuring performance on the Healthcare Access and Quality Index for 195 countries and territories and selected subnational locations: a systematic analysis from the Global Burden of Disease Study 2016
Fullman, Nancy, Yearwood, Jamal, Abay, Solomon M, Abbafati, Cristiana, Abd-Allah, Foad, Abdela, Jemal, Abdelalim, Ahmed, Abebe, Zegeye, Abebo, Teshome Abuka, Aboyans, Victor, Abraha, Haftom Niguse, Abreu, Daisy M X, Abu-Raddad, Laith J, Adane, Akilew Awoke, Adedoyin, Rufus Adesoji, Adetokunboh, Olatunji, Adhikari, Tara Ballav, Afarideh, Mohsen, Afshin, Ashkan, Agarwal, Gina, Agius, Dominic, Agrawal, Anurag, Agrawal, Sutapa, Ahmad Kiadaliri, Aliasghar, Aichour, Miloud Taki Eddine, Akibu, Mohammed, Akinyemi, Rufus Olusola, Akinyemiju, Tomi F, Akseer, Nadia ... GBD 2016 Healthcare Access and Quality Collaborators (2018). Measuring performance on the Healthcare Access and Quality Index for 195 countries and territories and selected subnational locations: a systematic analysis from the Global Burden of Disease Study 2016. The Lancet, 391 (10136), 2236-2271. doi: 10.1016/S0140-6736(18)30994-2
2018
Journal Article
Global statistics on alcohol, tobacco and illicit drug use: 2017 status report
Peacock, Amy, Leung, Janni, Larney, Sarah, Colledge, Samantha, Hickman, Matthew, Rehm, Jürgen, Giovino, Gary A., West, Robert, Hall, Wayne, Griffiths, Paul, Ali, Robert, Gowing, Linda, Marsden, John, Ferrari, Alize J., Grebely, Jason, Farrell, Michael and Degenhardt, Louisa (2018). Global statistics on alcohol, tobacco and illicit drug use: 2017 status report. Addiction, 113 (10), 1905-1926. doi: 10.1111/add.14234
2018
Journal Article
The state of US health, 1990-2016: Burden of diseases, injuries, and risk factors among US states
Murray, Christopher J. L., Mokdad, Ali H., Ballestros, Katherine, Echko, Michelle, Glenn, Scott, Olsen, Helen E., Mullany, Erin, Lee, Alex, Khan, Abdur Rahman, Ahmadi, Alireza, Ferrari, Alize J., Kasaeian, Amir, Werdecker, Andrea, Carter, Austin, Zipkin, Ben, Sartorius, Benn, Serdar, Berrin, Sykes, Bryan L., Troeger, Chris, Fitzmaurice, Christina, Rehm, Colin D., Santomauro, Damian, Kim, Daniel, Colombara, Danny, Schwebel, David C., Tsoi, Derrick, Kolte, Dhaval, Nsoesie, Elaine, Nichols, Emma ... Murray, Christopher J. L. (2018). The state of US health, 1990-2016: Burden of diseases, injuries, and risk factors among US states. JAMA - Journal of the American Medical Association, 319 (14), 1444-1472. doi: 10.1001/jama.2018.0158
2018
Conference Publication
Comparing the prevention gains of different treatment strategies at the global, regional, and country level: a modelling study
Trickey, A., Fraser, H., Lim, A. G., Walker, J., Peacock, A., Colledge, S., Leung, J., Grebely, J., Larney, S., Degenhardt, L., Hickman, M., May, M. and Vickerman, P. (2018). Comparing the prevention gains of different treatment strategies at the global, regional, and country level: a modelling study. International Liver Congress (ILC), Paris France, Apr 11-15, 2018. AMSTERDAM: ELSEVIER SCIENCE BV.
2018
Conference Publication
The contribution of injecting drug use to Hepatitis C virus transmission globally, regionally, and at country level: a modelling study
Trickey, A., Fraser, H., Lim, A. G., Walker, J., Peacock, A., Colledge, S., Leung, J., Grebely, J., Larney, S., Degenhardt, L., Hickman, M. and Vickerman, P. (2018). The contribution of injecting drug use to Hepatitis C virus transmission globally, regionally, and at country level: a modelling study. International Liver Congress (ILC), Paris France, Apr 11-15, 2018. AMSTERDAM: ELSEVIER SCIENCE BV.
Funding
Current funding
Past funding
Supervision
Availability
- Associate Professor Janni Leung is:
- Available for supervision
Looking for a supervisor? Read our advice on how to choose 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
- Public health impacts of cannabis legalisation
- Video gaming addiction in youth, adults, and later life across different population groups
*Propose your own topics. Research projects would be suitable to those:
- Highly motivated, proactive, and self-directed
- Strong written and oral communication skills
- Quantitative analysis experience
- Has completed or is enrolled to complete the UQ library workshop on systematic reviews and database searching
- Flexibility in independent work and values contribution to team work
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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, Associate Professor Gary Chung Kai Chan
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Doctor Philosophy
Population-level of substance use and health outcomes
Principal Advisor
Other advisors: Associate Professor Gary Chung Kai Chan, Professor Leanne Hides, Dr Carmen Lim
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Doctor Philosophy
The Rise of Cannabis Vaping: Current Trends, Psychological Impacts and Public Health Policy Implications
Associate Advisor
Other advisors: Professor Jason Connor, 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, Dr Natalie Thomas, 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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2024
Doctor Philosophy
Social Substances: The Online Landscape of Substance Use
Associate Advisor
Other advisors: Professor Jason Connor, Dr Daniel Stjepanovic, Associate Professor Gary Chung Kai Chan
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2024
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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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:
- addiction epidemiology
- alcohol harm
- behavioural addictions
- cannabis epidemiology
- cannabis legalisation
- digital gaming
- e-cigarettes / vaping
- mental health
- public health
- substance use
- video game addiction
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