Associate Professor Gary Chung Kai Chan
Associate Professor

Gary Chung Kai Chan

Email: 
Phone: 
+61 7 344 32533

Background

Dr. Gary Chan is a NHMRC Emerging Leadership Fellow at the National Centre for Youth Substance Use Research. His principal research interest lies in the field of substance misuse prevention and the application of cutting-edge statistical method for longitudinal analysis and causal inference. His recent publications have been focused on polysubstance use (including alcohol, tobacco and cannabis) profiles in adolescent populations, examinations of urban-rural differences in substance use, and the epidemiology of alcohol, tobacco and cannabis use. He collaborates extensively with leading researchers in major national and international institutes, including the University of Washington, Murdoch Children's Research Institute, University of Melbourne, and University College London. He has also served as a consultant at the United Nations Office of Drugs and Crime to improve exisitng methods for monitoring global trends of illicit substance production, trafficking and use. This work has made significant impact on how global data will be collected, and these new data will be used by the United nations and many national governments to inform drug policy decision making. He is a Deputy Statistical and Methodology Editor for the journal Addiction.

Dr. Chan is also a statistical advisor at the School of Psychology, providing statistical advice to academic staff and RHD students. Since 2016, he has also delivered several advanced statistcal workshops at the School on R and statistical modelling.

Availability

Associate Professor Gary Chung Kai Chan is:
Available for supervision
Media expert

Fields of research

Biomedical and Clinical Sciences Biostatistics Epidemiology Health Sciences Mathematical Sciences Psychology Statistics

Qualifications

  • Bachelor of Arts, The University of Queensland
  • Bachelor of Science, The University of Queensland
  • Masters (Coursework) of Science, The University of Queensland
  • Doctor of Philosophy, The University of Queensland

Search Professor Gary Chung Kai Chan’s works on UQ eSpace

216 works between 2012 and 2025
All (216) Journal Article (175) Book Chapter (1) Conference Publication (33) Other Outputs (7)

101 - 120 of 216 works

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

A systematic review of trends in US attitudes toward cannabis legalization

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

Is smoking reduction and cessation associated with increased e-cigarette use? Findings from a nationally representative sample of adult smokers in Australia

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

An age-period-cohort analysis of trends in psychedelic and ecstasy use in the Australian population

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

State-level prevalence and associates of opioid dependence in the USA

2022

Journal Article

Long-term results of triple immunosuppression with tacrolimus added to mycophenolate and corticosteroids in the treatment of lupus nephritis

Yap, Desmond Y. H., Li, Philip Hei, Tang, Colin, So, Benjamin Y. F., Kwan, Lorraine P. Y., Chan, Gary C. W., Lau, Chak Sing and Chan, Tak Mao (2022). Long-term results of triple immunosuppression with tacrolimus added to mycophenolate and corticosteroids in the treatment of lupus nephritis. Kidney International Reports, 7 (3), 516-525. doi: 10.1016/j.ekir.2021.12.005

Long-term results of triple immunosuppression with tacrolimus added to mycophenolate and corticosteroids in the treatment of lupus nephritis

2022

Journal Article

Perceived access to cannabis and ease of purchasing cannabis in retail stores in Canada immediately before and one year after legalization

Wadsworth, Elle, Driezen, Pete, Chan, Gary, Hall, Wayne and Hammond, David (2022). Perceived access to cannabis and ease of purchasing cannabis in retail stores in Canada immediately before and one year after legalization. The American Journal of Drug and Alcohol Abuse, 48 (2), 1-11. doi: 10.1080/00952990.2021.2003808

Perceived access to cannabis and ease of purchasing cannabis in retail stores in Canada immediately before and one year after legalization

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

Changes in viewer engagement and accessibility of popular vaping videos on TikTok: a 12-month prospective study

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

Prevalence and self-reported reasons of cannabis use for medical purposes in USA and Canada

2022

Other Outputs

Causal Inference with Observational Data in R: Propensity Scores, Inverse Probability Treatment Weighting, and Marginal Structural Models

Chan, Gary (2022). Causal Inference with Observational Data in R: Propensity Scores, Inverse Probability Treatment Weighting, and Marginal Structural Models. Instats Inc.. doi: 10.61700/qp1korrfs9hkv469

Causal Inference with Observational Data in R: Propensity Scores, Inverse Probability Treatment Weighting, and Marginal Structural Models

2022

Journal Article

Assessing alcohol consumption in a Chinese urban population and a university town using high temporal resolution wastewater-based epidemiology

Zheng, Qiuda, Chan, Gary C.K., Wang, Zhe, Connor, Jason P., Ren, Yuan and Thai, Phong K. (2022). Assessing alcohol consumption in a Chinese urban population and a university town using high temporal resolution wastewater-based epidemiology. Drug and Alcohol Dependence, 230 109178, 109178. doi: 10.1016/j.drugalcdep.2021.109178

Assessing alcohol consumption in a Chinese urban population and a university town using high temporal resolution wastewater-based epidemiology

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

The impact of eSports and online video gaming on lifestyle behaviours in youth: a systematic review

2022

Journal Article

A wastewater‐based assessment of the impact of a minimum unit price on population alcohol consumption in the Northern Territory, Australia

O’Brien, Jake W., Tscharke, Benjamin J., Bade, Richard, Chan, Gary, Gerber, Cobus, Mueller, Jochen F., Thomas, Kevin V. and Hall, Wayne D. (2022). A wastewater‐based assessment of the impact of a minimum unit price on population alcohol consumption in the Northern Territory, Australia. Addiction, 117 (1), 243-249. doi: 10.1111/add.15631

A wastewater‐based assessment of the impact of a minimum unit price on population alcohol consumption in the Northern Territory, Australia

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

What is the short-term remission rate for people with untreated depression? A systematic review and meta-analysis

2022

Other Outputs

Causal Inference with Observational Data in R

Chan, Gary (2022). Causal Inference with Observational Data in R. Instats Inc.. doi: 10.61700/nudgujitla9qv469

Causal Inference with Observational Data in R

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

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?

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

Estimating the global treatment rates for depression: a systematic review and meta-analysis

2021

Journal Article

The experience of physiological and psychosocial alcohol-related harms across adolescence and its association with alcohol use disorder in early adulthood: A prospective cohort study

Yuen, Wing See, Bruno, Raimondo, Chan, Gary C. K., McCambridge, Jim, Slade, Tim, Clare, Philip J., Aiken, Alexandra, Kypri, Kypros, Hutchinson, Delyse, McBride, Nyanda, Boland, Veronica, Upton, Emily, Farrell, Michael, Mattick, Richard P. and Peacock, Amy (2021). The experience of physiological and psychosocial alcohol-related harms across adolescence and its association with alcohol use disorder in early adulthood: A prospective cohort study. Alcoholism: Clinical and Experimental Research, 45 (12), 2518-2527. doi: 10.1111/acer.14726

The experience of physiological and psychosocial alcohol-related harms across adolescence and its association with alcohol use disorder in early adulthood: A prospective cohort study

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

Age-related trends in cannabis use in Australia. Findings from a series of large nationally representative surveys

2021

Journal Article

The relationship between cannabis and tobacco co-administration and long-term patterns of cannabis use in young adults who use stimulants: a prospective population-based study

Ahmed Alghamdi, Abdullah, Gartner, Coral, Najman, Jake M., Chan, Gary and Smirnov, Andrew (2021). The relationship between cannabis and tobacco co-administration and long-term patterns of cannabis use in young adults who use stimulants: a prospective population-based study. Substance Use and Misuse, 57 (1), 1-10. doi: 10.1080/10826084.2021.1975744

The relationship between cannabis and tobacco co-administration and long-term patterns of cannabis use in young adults who use stimulants: a prospective population-based study

2021

Conference Publication

Estimating the global treatment rates for alcohol use disorder and depression: a systematic review and meta-analysis

Mekonen, Tesfa, Chan, Gary C. K., Connor, Jason P., Hall, Wayne D., Hides, Leanne and Leung, Janni (2021). Estimating the global treatment rates for alcohol use disorder and depression: a systematic review and meta-analysis. APSAD 2021 Conference, Virtual, 7-10 November 2021. Chichester, West Sussex, United Kingdom: Wiley-Blackwell.

Estimating the global treatment rates for alcohol use disorder and depression: a systematic review and meta-analysis

Current funding

  • 2025 - 2029
    Unleashing the power of AI: Supercharging social media campaigns against youth vaping
    NHMRC Investigator Grants
    Open grant
  • 2024 - 2029
    Implementation, Effectiveness and Sustainability of a Co-designed Value-based Brief Intervention Model of Healthcare in Alcohol and Other Drug Services
    NHMRC Partnership Projects
    Open grant
  • 2024 - 2028
    Unclouding the future: Igniting change with an AI-powered social media campaign against youth vaping
    NHMRC MRFF PPHR - Maternal Health and Healthy Lifestyles
    Open grant
  • 2023 - 2028
    The Interdisciplinary Tobacco Endgame Research Network (INTER-Net)
    NHMRC Synergy Grants
    Open grant
  • 2022 - 2027
    Centre of Research Excellence in Alcohol and Other Drug sector capacity building for outcome focused, evidence based and cost effective care (CRE in AOD -CB)
    NHMRC Centres of Research Excellence
    Open grant

Past funding

  • 2023 - 2024
    Establishing an International Consortium on video gaming addiction
    U21 Health Sciences Group International Projects Fund
    Open grant
  • 2023
    Review of alcohol and other drugs program
    Queensland Department of Education
    Open grant
  • 2023
    How can we minimise the adolescent uptake of vaping and related social and health harm?
    Academy of the Social Sciences in Australia
    Open grant
  • 2022 - 2023
    Causal inference with observational data in addiction research
    Australian Prevention Partnership Centre Administered by The Sax Institute
    Open grant
  • 2022
    Cannabis - A joyful treat or devil's fruit?
    UQ Foundation Research Excellence Awards
    Open grant
  • 2021 - 2024
    BALANCE: Promoting wellBeing in AdoLescent and young Adult cancer survivors
    NHMRC Partnership Projects
    Open grant
  • 2020 - 2024
    E-cigarettes and vaping: Holy grail of tobacco control or gateway to a public health disaster?
    NHMRC Investigator Grants
    Open grant
  • 2017 - 2018
    Informing future policies on cannabis in Australia. Lessons from new trends in the USA and from the history of tobacco control.
    UQ Early Career Researcher
    Open grant
  • 2016 - 2019
    Pathways to multiple substance use: informing the next generation of prevention science
    UQ Fellowships
    Open grant

Availability

Associate Professor Gary Chung Kai Chan is:
Available for supervision

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Available projects

  • Electronic cigarettes use among young people - risks factors for its initiation and escalation, impact on mental health, and its effect on smoking cessation

    Electronic cigarettes and personal vaporisors have been gaining popularity in many developed countries such as the US, Canada and the UK. It has been promoted as a cessation device for smokers, thus it holds the potential to reduce smoking related burden on the society. However, it also raises concerns that its uptake among young people may renormalise cigarette smoking. This projects will evaluate the overall evidences of its benefit and harms on public health.

  • Understanding initiation, escalation and remission of substance use from adolescence to mid-adulthood: A life course approach

    It is well known that adolescence is a period of experiementation and many adolescents may experience with illicit substance during this period. While many of them do not progress into problematic use (e.g. abuse and dependence), some have escalated their use during their 20s and maintained their habits into 30s and 40s. This project will take a life course approach to understand risk factors for substance initiation and escalation, and factors that are linked to natural remission of substance us in mid-adulthood.

  • The benefits and harms of Gaming

    With the proliferation of handheld devices, video gaming has penstrated nearly every corner of the world and every age groups. This project will focus on quantifying the benefit of gaming, such as increased connectivity with friends in the virtual world and overcoming loneliness during difficult time (e.g., COVID lockdown), and the potential harms such as addiction.

Supervision history

Current supervision

Completed supervision

Enquiries

Contact Associate Professor Gary Chung Kai Chan directly for media enquiries about:

  • alcohol
  • cannabis
  • Substance use

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