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
Mood and anxiety symptoms in persons taking prescription opioids: a systematic review with meta-analyses of longitudinal studies
Leung, Janni, Santo, Thomas, Colledge, Samantha, Mekonen, Tesfa, Thomson, Kate, Degenhardt, Louisa, Connor, Jason P., Hall, Wayne and Stjepanović, Daniel (2022). Mood and anxiety symptoms in persons taking prescription opioids: a systematic review with meta-analyses of longitudinal studies. Pain Medicine, 23 (8), 1442-1456. doi: 10.1093/pm/pnac029
2022
Journal Article
Perceived loneliness, peer, and parental relationship with smoking: a cross-sectional analysis of adolescents across South-East Asia
McClure-Thomas, Caitlin, Lim, Carmen, Sebayang, Susy, Fausiah, Fitri, Gouda, Hebe and Leung, Janni (2022). Perceived loneliness, peer, and parental relationship with smoking: a cross-sectional analysis of adolescents across South-East Asia. Asia Pacific Journal of Public Health, 34 (8), 770-777. doi: 10.1177/10105395221115220
2022
Journal Article
Getting high for likes: exploring cannabis‐related content on TikTok
Rutherford, Brienna N., Sun, Tianze, Johnson, Benjamin, Co, Steven, Lim, Tong Liang, Lim, Carmen C. W., Chiu, Vivian, Leung, Janni, Stjepanovic, Daniel, Connor, Jason P. and Chan, Gary C. K. (2022). Getting high for likes: exploring cannabis‐related content on TikTok. Drug and Alcohol Review, 41 (5), 1119-1125. doi: 10.1111/dar.13433
2022
Journal Article
Self-reported long COVID in the general population: sociodemographic and health correlates in a cross-national sample
Bonsaksen, Tore, Leung, Janni, Price, Daicia, Ruffolo, Mary, Lamph, Gary, Kabelenga, Isaac, Thygesen, Hilde and Geirdal, Amy Østertun (2022). Self-reported long COVID in the general population: sociodemographic and health correlates in a cross-national sample. Life, 12 (6) 901, 1-13. doi: 10.3390/life12060901
2022
Conference Publication
Patterns of tobacco and cannabis use in Australia: a latent class analysis and health-related correlates
Lim, Carmen C. W., Leung, Janni, Gravely, Shannon, Gartner, Coral, Chiu, Vivian, Sun, Tianze, Chung, Jack, Stjepanovic, Daniel, Connor, Jason, Scheurer, Roman, Hall, Wayne and Chan, Gary (2022). Patterns of tobacco and cannabis use in Australia: a latent class analysis and health-related correlates. The College on Problems of Drug Dependence, Minneapolis, MN USA, 11-15 June 2022.
2022
Journal Article
Causal inference with observational data in addiction research
Chan, Gary C. K., Lim, Carmen, Sun, Tianze, Stjepanovic, Daniel, Connor, Jason, Hall, Wayne and Leung, Janni (2022). Causal inference with observational data in addiction research. Addiction, 117 (10), 2736-2744. doi: 10.1111/add.15972
2022
Journal Article
Changes in patterns of youth multiple tobacco and/or e-cigarette product use in the US between 2014 and 2020: a multiple-group latent class analysis
Sun, Tianze, Lim, Carmen C W, Rutherford, Brienna N., Johnson, Benjamin, Connor, Jason, Gartner, Coral E, Hall, Wayne D, Leung, Janni and Chan, Gary (2022). Changes in patterns of youth multiple tobacco and/or e-cigarette product use in the US between 2014 and 2020: a multiple-group latent class analysis. Tobacco Control, 33 (1) tobaccocontrol-2022-057266, tobaccocontrol-2022. doi: 10.1136/tobaccocontrol-2022-057266
2022
Conference Publication
Pain and psychotic-like experiences in young people using cannabis
Wilson, Joanna, Constable, Toby, Mason, Katherine, Ferris, Laura, Quinn, Catherine, Hides, Leanne, Leung, Janni and Carlyle, Molly (2022). Pain and psychotic-like experiences in young people using cannabis. 3rd International Electronic Conference on Environmental Research and Public Health—Public Health Issues in the Context of the COVID-19 Pandemic, Online, 11-25 January 2021. Basel, Switzerland: MDPI. doi: 10.3390/ecerph-3-09056
2022
Journal Article
Prevalence and correlates of cannabis use for medicinal reasons – an Australian cross-sectional study
Leung, Janni, Lim, Carmen C.W., Chiu, Vivian, Chung, Jack, Mekonen, Tesfa, Dawson, Danielle, Hall, Wayne D. and Chan, Gary C.K. (2022). Prevalence and correlates of cannabis use for medicinal reasons – an Australian cross-sectional study. Addictive Behaviors Reports, 15 100436, 100436. doi: 10.1016/j.abrep.2022.100436
2022
Journal Article
Did the under‐reporting of meth/amphetamine use increase in a general population survey in Australia as negative media coverage increased?
Chan, Gary, Sun, Tianze, Lim, Carmen, Stjepanović, Daniel, Rutherford, Brienna, Johnson, Benjamin, Hall, Wayne and Leung, Janni (2022). Did the under‐reporting of meth/amphetamine use increase in a general population survey in Australia as negative media coverage increased?. Addiction, 117 (6), 1787-1793. doi: 10.1111/add.15783
2022
Journal Article
Cross-national study of mental health and employment status nine months post social distancing implementation practices
Ruffolo, Mary C., Price, Daicia, Bonsaksen, Tore, Leung, Janni, Schoultz, Mariyana, Thygesen, Hilde and Geirdal, Ostertun (2022). Cross-national study of mental health and employment status nine months post social distancing implementation practices. British Journal of Social Work, 52 (4), 2105-2124. doi: 10.1093/bjsw/bcab177
2022
Journal Article
Students’ mental health, well-being, and loneliness during the COVID-19 pandemic: a cross-national study
Bonsaksen, Tore, Chiu, Vivian, Leung, Janni, Schoultz, Mariyana, Thygesen, Hilde, Price, Daicia, Ruffolo, Mary and Geirdal, Amy Østertun (2022). Students’ mental health, well-being, and loneliness during the COVID-19 pandemic: a cross-national study. Healthcare, 10 (6) 996, 1-13. doi: 10.3390/healthcare10060996
2022
Journal Article
Age‐period‐cohort analysis of trends in tobacco smoking, cannabis use, and their co‐use in the Australian population
Leung, Janni, Gravely, Shannon, Lim, Carmen, Hall, Wayne and Chan, Gary (2022). Age‐period‐cohort analysis of trends in tobacco smoking, cannabis use, and their co‐use in the Australian population. Addiction, 117 (10), 2730-2735. doi: 10.1111/add.15951
2022
Journal Article
Association between the implementation of tobacco control policies and adolescent vaping in 44 lower‐middle, upper‐middle, and high‐income countries
Chan, Gary C. K., Gartner, Coral, Lim, Carmen, Sun, Tianze, Hall, Wayne, Connor, Jason, Stjepanović, Daniel and Leung, Janni (2022). Association between the implementation of tobacco control policies and adolescent vaping in 44 lower‐middle, upper‐middle, and high‐income countries. Addiction, 117 (8), 1-10. doi: 10.1111/add.15892
2022
Journal Article
A systematic review of trends in US attitudes toward cannabis legalization
Chiu, Vivian, Hall, Wayne, Chan, Gary, Hides, Leanne and Leung, Janni (2022). A systematic review of trends in US attitudes toward cannabis legalization. Substance Use and Misuse, 57 (7), 1-10. doi: 10.1080/10826084.2022.2063893
2022
Journal Article
Is smoking reduction and cessation associated with increased e-cigarette use? Findings from a nationally representative sample of adult smokers in Australia
Sun, Tianze, Lim, Carmen C.W., Rutherford, Brienna N., Johnson, Benjamin, Leung, Janni, Gartner, Coral, Hall, Wayne D., Connor, Jason P. and Chan, C. K. Gary (2022). Is smoking reduction and cessation associated with increased e-cigarette use? Findings from a nationally representative sample of adult smokers in Australia. Addictive Behaviors, 127 107217, 1-5. doi: 10.1016/j.addbeh.2021.107217
2022
Journal Article
An age-period-cohort analysis of trends in psychedelic and ecstasy use in the Australian population
Chan, Gary, Sun, Tianze, Lim, Carmen, Yuen, Wing See, Stjepanović, Daniel, Rutherford, Brienna, Hall, Wayne, Johnson, Ben and Leung, Janni (2022). An age-period-cohort analysis of trends in psychedelic and ecstasy use in the Australian population. Addictive Behaviors, 127 107216, 107216. doi: 10.1016/j.addbeh.2021.107216
2022
Journal Article
State-level prevalence and associates of opioid dependence in the USA
Leung, Janni, Chan, Gary C. K., Tan, Samuel X., McClure-Thomas, Caitlin, Degenhardt, Louisa and Hall, Wayne (2022). State-level prevalence and associates of opioid dependence in the USA. International Journal of Environmental Research and Public Health, 19 (7) 3825, 3825. doi: 10.3390/ijerph19073825
2022
Journal Article
Global, regional, and national burden of 12 mental disorders in 204 countries and territories, 1990-2019: a systematic analysis for the Global Burden of Disease Study 2019
Ferrari, Alize J., Santomauro, Damian F., Herrera, Ana M. Mantilla, Shadid, Jamileh, Ashbaugh, Charlie, Erskine, Holly E., Charlson, Fiona J., Degenhardt, Louisa, Scott, James G., McGrath, John J., Allebeck, Peter, Benjet, Corina, Breitborde, Nicholas J. K., Brugha, Traolach, Dai, Xiaochen, Dandona, Lalit, Dandona, Rakhi, Fischer, Florian, Haagsma, Juanita A., Maria Haro, Josep, Kieling, Christian, Knudsen, Ann Kristin Skrindo, Kumar, G. Anil, Leung, Janni, Majeed, Azeem, Mitchell, Philip B., Moitra, Modhurima, Mokdad, Ali H., Molokhia, Mariam ... Whiteford, Harvey A. (2022). Global, regional, and national burden of 12 mental disorders in 204 countries and territories, 1990-2019: a systematic analysis for the Global Burden of Disease Study 2019. Lancet Psychiatry, 9 (2), 137-150. doi: 10.1016/s2215-0366(21)00395-3
2022
Journal Article
Changes in viewer engagement and accessibility of popular vaping videos on TikTok: a 12-month prospective study
Rutherford, Brienna N., Sun, Tianze, Lim, Carmen C. W., Chung, Jack, Cheng, Brandon, Davidson, Lily, Tisdale, Calvert, Leung, Janni, Stjepanović, Daniel, Connor, Jason P. and Chan, Gary C. K. (2022). Changes in viewer engagement and accessibility of popular vaping videos on TikTok: a 12-month prospective study. International Journal of Environmental Research and Public Health, 19 (3) 1141, 1141. doi: 10.3390/ijerph19031141
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
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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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