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
2020
Conference Publication
Availability of substances for use in personal vaporisers on three online cryptomarkets
Lim, Carmen, Leung, Janni, Cheng, Brandon, Connor, Jason, Hall, Wayne, Gartner, Coral, Scheurer, Roman, Sun, Tianze and Chan, Gary (2020). Availability of substances for use in personal vaporisers on three online cryptomarkets. APSAD EMCR virtual showcase , Online, 4-25 November 2020.
2020
Journal Article
Five insights from the Global Burden of Disease Study 2019
Abbafati, Cristiana, Abbas, Kaja M., Abbasi, Mohammad, Abbasifard, Mitra, Abbasi-Kangevari, Mohsen, Abbastabar, Hedayat, Abd-Allah, Foad, Abdelalim, Ahmed, Abdollahi, Mohammad, Abdollahpour, Ibrahim, Abedi, Aidin, Abedi, Parisa, Abegaz, Kedir Hussein, Abolhassani, Hassan, Abosetugn, Akine Eshete, Aboyans, Victor, Abrams, Elissa M., Abreu, Lucas Guimaraes, Abrigo, Michael R. M., Abu Haimed, Abdulaziz Khalid, Abualhasan, Ahmed, Abu-Gharbieh, Eman, Abu-Raddad, Laith Jamal, Abushouk, Abdelrahman I., Acebedo, Alyssa, Ackerman, Ilana N., Adabi, Maryam, Adair, Tim, Adamu, Abdu A. ... Murray, Christopher J. L. (2020). Five insights from the Global Burden of Disease Study 2019. Lancet, 396 (10258), 1135-1159.
2020
Journal Article
Gateway or common liability? A systematic review and meta‐analysis of studies of adolescent e‐cigarette use and future smoking initiation
Chan, Gary C. K., Stjepanovic, Daniel, Lim, Carmen, Sun, Tianze, Shanmuga Anandan, Aathavan, Connor, Jason P., Gartner, Coral, Hall, Wayne D. and Leung, Janni (2020). Gateway or common liability? A systematic review and meta‐analysis of studies of adolescent e‐cigarette use and future smoking initiation. Addiction, 116 (4) add.15246, 743-756. doi: 10.1111/add.15246
2020
Journal Article
What is the prevalence and risk of cannabis use disorders among people who use cannabis? a systematic review and meta-analysis
Leung, Janni, Chan, Gary C.K., Hides, Leanne and Hall, Wayne D. (2020). What is the prevalence and risk of cannabis use disorders among people who use cannabis? a systematic review and meta-analysis. Addictive Behaviors, 109 106479, 106479. doi: 10.1016/j.addbeh.2020.106479
2020
Journal Article
Injecting risk behaviours amongst people who inject drugs: A global multi-stage systematic review and meta-analysis
Tran, Lucy Thi, Peacock, Amy, Colledge, Samantha, Memedovic, Sonja, Grebely, Jason, Leung, Janni, Larney, Sarah, Trickey, Adam, Stone, Jack, Vickerman, Peter, Hickman, Matthew and Degenhardt, Louisa (2020). Injecting risk behaviours amongst people who inject drugs: A global multi-stage systematic review and meta-analysis. International Journal of Drug Policy, 84 102866, 102866. doi: 10.1016/j.drugpo.2020.102866
2020
Journal Article
Short-term effects of state legalization on adolescent cannabis use may not predict any longer-term effects
Hall, Wayne D. and Leung, Janni (2020). Short-term effects of state legalization on adolescent cannabis use may not predict any longer-term effects. American Journal of Public Health, 110 (9), 1270-1271. doi: 10.2105/AJPH.2020.305830
2020
Journal Article
Perfectionism as a mediator of psychological distress: implications for addressing underlying vulnerabilities to the mental health of medical students
Eley, Diann S., Bansal, Vikas and Leung, Janni (2020). Perfectionism as a mediator of psychological distress: implications for addressing underlying vulnerabilities to the mental health of medical students. Medical Teacher, 42 (11), 1-7. doi: 10.1080/0142159x.2020.1805101
2020
Journal Article
Assessment of causal link between psychological factors and symptom exacerbation in inflammatory bowel disease: a systematic review utilising Bradford Hill criteria and meta-analysis of prospective cohort studies
Schoultz, Mariyana, Beattie, Michelle, Gorely, Trish and Leung, Janni (2020). Assessment of causal link between psychological factors and symptom exacerbation in inflammatory bowel disease: a systematic review utilising Bradford Hill criteria and meta-analysis of prospective cohort studies. Systematic Reviews, 9 (1) 169, 169. doi: 10.1186/s13643-020-01426-2
2020
Journal Article
How many more young Australians say that they would use cannabis if it were legal? : Australians say that they would use cannabis
Leung, Janni, Chiu, Vivian, Chung, Jack Yiu Chak, Hall, Wayne D. and Chan, Gary C. K. (2020). How many more young Australians say that they would use cannabis if it were legal? : Australians say that they would use cannabis. Drug and Alcohol Review, 39 (6), 768-772. doi: 10.1111/dar.13124
2020
Journal Article
Alcohol advertisers may be using social media to encourage parents to drink during COVID ‐19
Leung, Janni, Connor, Jason, Hides, Leanne and Hall, Wayne D (2020). Alcohol advertisers may be using social media to encourage parents to drink during COVID ‐19. Medical Journal of Australia, 213 (4) mja2.50707, 188-188.e1. doi: 10.5694/mja2.50707
2020
Journal Article
How do different chronic condition comorbidities affect changes in depressive symptoms of middle aged and older adults?
Leung, Janni, Fan, Vanessa Sha and Mahadevan, Renuka (2020). How do different chronic condition comorbidities affect changes in depressive symptoms of middle aged and older adults?. Journal of Affective Disorders, 272, 46-49. doi: 10.1016/j.jad.2020.03.125
2020
Conference Publication
What vaping products can you pick up from online cryptomarkets?
Lim, Carmen, Cheng, Branden, Leung, Janni, Hall, Wayne, Connor, Jason, Gartner, Coral, Scheurer, Roman and Chan, Gary (2020). What vaping products can you pick up from online cryptomarkets?. 2020 NIDA International Forum, Conference: 2020 NIDA International Forum, 19-21st June 2020.
2020
Journal Article
Socio-demographic and ecological factors associated with anti-HCV prevalence in people who inject drugs: a systematic review
Colledge, Samantha, Leung, Janni, Grebely, Jason, Degenhardt, Louisa, Peacock, Amy, Hickman, Matthew, Vickerman, Peter, Stone, Jack, Trickey, Adam and Larney, Sarah (2020). Socio-demographic and ecological factors associated with anti-HCV prevalence in people who inject drugs: a systematic review. Drug and Alcohol Dependence, 209 107899, 107899. doi: 10.1016/j.drugalcdep.2020.107899
2020
Journal Article
Global systematic review and ecological analysis of HIV in people who inject drugs: National population sizes and factors associated with HIV prevalence
Larney, Sarah, Leung, Janni, Grebely, Jason, Hickman, Matthew, Vickerman, Peter, Peacock, Amy, Stone, Jack, Trickey, Adam, Dumchev, Kostyantyn V., Colledge, Samantha, Cunningham, Evan B., Lynskey, Michael, Mattick, Richard P. and Degenhardt, Louisa (2020). Global systematic review and ecological analysis of HIV in people who inject drugs: National population sizes and factors associated with HIV prevalence. International Journal of Drug Policy, 77 102656, 102656. doi: 10.1016/j.drugpo.2019.102656
2020
Journal Article
Depression, post-traumatic stress disorder, suicidality and self-harm among people who inject drugs: a systematic review and meta-analysis
Colledge, Samantha, Larney, Sarah, Peacock, Amy, Leung, Janni, Hickman, Matt, Grebely, Jason, Farrell, Michael and Degenhardt, Louisa (2020). Depression, post-traumatic stress disorder, suicidality and self-harm among people who inject drugs: a systematic review and meta-analysis. Drug and Alcohol Dependence, 207 107793, 1-7. doi: 10.1016/j.drugalcdep.2019.107793
2020
Journal Article
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, Trickey, Adam, Stone, Jack, Vickerman, Peter and Degenhardt, Louisa (2020). Frequency of injecting among people who inject drugs: A systematic review and meta-analysis. International Journal of Drug Policy, 76 102619, 102619. doi: 10.1016/j.drugpo.2019.102619
2020
Conference Publication
Availability of substances for use in personal vaporisers on three online cryptomarkets
Lim, C., Cheng, B., Leung, J., Hall, W., Connor, J., Gartner, C., Scheurer, R. and Chan, G. (2020). Availability of substances for use in personal vaporisers on three online cryptomarkets. 2020 NIDA International Forum , Online, June 2020. Online:
2020
Journal Article
Associations between national development indicators and the age profile of people who inject drugs: results from a global systematic review and meta-analysis
Hines, Lindsey A., Trickey, Adam, Leung, Janni, Larney, Sarah, Peacock, Amy, Degenhardt, Louisa, Colledge, Samantha, Hickman, Matthew, Grebely, Jason, Cunningham, Evan B., Stone, Jack, Dumchev, Kostyantyn, Griffiths, Paul, Vickerman, Peter, Mattick, Richard P. and Lynskey, Michael (2020). Associations between national development indicators and the age profile of people who inject drugs: results from a global systematic review and meta-analysis. The Lancet Global Health, 8 (1), e76-e91. doi: 10.1016/S2214-109X(19)30462-0
2019
Journal Article
All-cause and cause-specific mortality among people using extramedical opioids: a systematic review and meta-analysis
Larney, Sarah, Tran, Lucy Thi, Leung, Janni, Santo, Thomas, Santomauro, Damian, Hickman, Matt, Peacock, Amy, Stockings, Emily and Degenhardt, Louisa (2019). All-cause and cause-specific mortality among people using extramedical opioids: a systematic review and meta-analysis. JAMA Psychiatry, 77 (5), E1-E10. doi: 10.1001/jamapsychiatry.2019.4170
2019
Journal Article
Consent to data linkage in a large online epidemiological survey of 18-23 year old Australian women in 2012-13
Graves, Anna, McLaughlin, Deirdre, Leung, Janni and Powers, Jennifer (2019). Consent to data linkage in a large online epidemiological survey of 18-23 year old Australian women in 2012-13. BMC Medical Research Methodology, 19 (1) 235, 1-9. doi: 10.1186/s12874-019-0880-z
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
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
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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
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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