Rate My Professor Andrew Gray

Research Associate Professor Andrew Gray serves at the Biostatistics Centre in the Department of Preventive and Social Medicine, Dunedin School of Medicine, Division of Health Sciences, University of Otago. He holds qualifications of BA and BCom(Hons) and has occupied this specialist biostatistician role since February 2004. Prior to this appointment, Gray was a researcher specializing in software metrics and machine learning within the Department of Information Science at the University of Otago. Renowned for his expertise in the planning, design, analysis, and communication of health-related research, he collaborates extensively across health sciences disciplines.

Gray's academic interests and research specializations include paediatric obesity, sleep, and physical activity; respiratory epidemiology, particularly asthma and chronic obstructive pulmonary disease; dentistry; and health systems. His methodological contributions cover biostatistics, statistics, epidemiology, reproducible research, clinical trials, causal inference, missing data, study design, Bayesian statistics, and machine learning. He addresses public health topics such as nutrition, physical activity, screen time, respiratory disease, smoking, asthma, oral health, and cancer. A member of the New Zealand Statistical Association and participant in its Mentoring Programme, Gray also acts as an Editor at PeerJ, enhancing research quality in health sciences. With over 15,877 citations on Google Scholar, an h-index reflecting substantial influence, and more than 505 publications on ResearchGate, his work demonstrates significant impact. Key publications encompass "Sleep hygiene intervention for youth aged 10 to 18 years with disruptive behaviours" (2012), "Prevalence and impact of musculoskeletal disorders in secondary school children" (2009), "Suicide by occupation: does access to means increase the risk?" (2010), "A longitudinal study of parental discipline up to 5 years" (2019), "Differential Effects of Cannabis and Tobacco on Lung Function in Mid-Adult Life" (2022), and "The Performance of ChatGPT on Short-answer Questions in a Psychiatry Examination: A Pilot Study" (2024). Gray's contributions have shaped statistical methodologies and health research outcomes regionally and internationally.