Dr Matthew Chau Siu-long is a registered nurse and currently a Post-doctoral Fellow at the School of Public Health, The University of Hong Kong, where he earned his bachelor’s and PhD degrees. His research focuses on addiction, eliminating tobacco use, and alcohol harm reduction - the world’s two most preventable causes of disease and death. His doctoral study was on using mobile instant messaging apps (e.g., WhatsApp, WeChat) to develop a chat-based intervention for alcohol reduction in university high-risk student drinkers. His research involves a wide spectrum of research methods, including population-based surveys, qualitative research, and randomised controlled trials. Dr Matthew Chau is also committed to primary healthcare research.

1. Chau SL, Luk TT, Wong BYC, Wu YS, Cheung YTD, Ho SY, Kim JH, Lo HHM, Lam TH, Wang MP. A Brief Intervention With Instant Messaging or Regular Text Messaging Support in Reducing Alcohol Use: A Randomized Clinical Trial. JAMA Internal Medicine. 2024 Apr 8:e240343.doi: 10.1001/jamainternmed.2024.0343.
2. Chau SL, Wu Y, Wang MP, Ho SY. Associations of passive drinking with perceived health status, mental health, and family wellbeing in Hong Kong Chinese adolescents: a cross-sectional study. Adolescents. 2023, 3(1), 173-181. doi: 10.3390/adolescents3010013.
3. Chau SL, Wong YC, Zeng YP, Lee JJ, Wang MP. Perceptions of using instant messaging apps for alcohol reduction intervention among university student drinkers: semistructured interview study with Chinese university students in Hong Kong. JMIR Formative Research. 2023, 7, e40207. doi: 10.2196/40207.
4. Chau SL, Wu Y, Wang MP, Ho SY. Interactive video-based passive drinking and forced drinking education to reduce intention to drink in adolescents: a pre-post intervention study. International Journal of Environmental Research and Public Health. 2022, 20(1), 332. doi: 10.3390/ijerph20010332.
5. Chau SL, Wang MP, Wu Y, Cheung DYT, Kong A, Lai V, Lam TH, Ho SY. Polytobacco product use among current cigarette smokers in Hong Kong, China: results from population surveys (2015–17). BMC Public Health. 2021; 21(307), 1-8. doi: 10.1186/s12889-021-10341-7.
6. Zhao SZ, Wu Y, Chau SL, Fong DYT, Lam TH, Wang MP. Mobile chat-based support plus nicotine replacement therapy sampling to promote smoking cessation for community smokers: A randomized controlled trial. Tobacco Induced Diseases. 2021; 19(32): 1-13. doi: 10.18332/tid/133373.