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Academic Staff

Calvin K.L. Or

Associate Professor
Assistant Head of Department


3917 2587


HW 8-7


Dr. Calvin K. L. Or received his BEng, MSc, and PhD degrees in Industrial Engineering from the Hong Kong University of Science and Technology, Mississippi State University, and the University of Wisconsin-Madison, respectively. His research focuses on the development, implementation, and assessment of smart health information technology and other healthcare interventions to create scientific knowledge about their effectiveness and safety. The aims of his research are to improve human-technology-process interaction in order to enhance the performance, safety, and health of patients and care providers as well as quality of care.

Research Interests

  • Human-technology interaction; human factors engineering; digital health; patient safety

Professional Services & Honorary Appointment

  • Honorary Advisor, Quality and Safety, New Territories East Cluster, Hong Kong Hospital Authority
  • President, Hong Kong Ergonomics Society (2019 - 2021)
  • Editor, Applied Ergonomics (2019 - present)
  • Section Editor, PLOS Digital Health (2023 - present)
  • Associate Editor, International Journal of Healthcare Information Systems and Informatics
  • Editorial Board Member, International Journal of Medical Informatics



  • IMSE3128 Human Factors Engineering
  • IELM6030 Ergonomics (Graduate level)


  • Man-Machine Systems
  • Occupational Health & Safety Management
  • Work Design
  • Introduction to Human Factors Engineering

Selected Publications

  • Or, C.* & Chan, A. H. S. (2024). Inspection Methods for Usability Evaluation. In Constantine Stephanidis and Gavriel Salvendy (Eds.), User Experience Methods and Tools in Human-Computer Interaction. 1st Ed. Boca Raton, FL: CRC Press.
  • Yang, L., Pan., J., Or, C., & Wang, W. P.* (2024). Learning autonomous viewpoint adjustment from human demonstrations for telemanipulation. AMC Transactions on Human-Robot Interaction.
  • Chen, T. & Or, C. K.* (2023). Automated machine learning-based prediction of the progression of knee pain, functional decline, and incidence of knee osteoarthritis in individuals at high risk of knee osteoarthritis: Data from the Osteoarthritis Initiative study. Digital Health, 9, 20552076231216419.

  • Chen. J., Or. C.*, Li., Z, Yeung, E. H. K., Zhou, Y., & Hao., T. (2023). Effectiveness, safety, and patients’ perceptions of an immersive virtual reality-based exercise system for poststroke upper limb motor rehabilitation: A proof-of- concept and feasibility randomized controlled trial. Digital Health, 9, 20552076231203599.

  • Xie, Z., Or, C.*, & Chen, T. (2022). Consumers’ willingness to pay for eHealth and its influencing factors: A systematic review and meta-analysis. Journal of Medical Internet Research, 24(9), e25959. 
  • Chen, T., Chen, J., Or, C. K.*, & Felix, Lo (2022). Path analysis of the roles of age, self-efficacy, and TAM constructs in the acceptance of performing upper limb exercises through immersive virtual reality games. International Journal of Industrial Ergonomics, 91, article 103360. 
  • Liu, K., Or, C. K.*, So, M., Cheung, B., Chan, B., Tiwari, A., & Tan, J. (2022). A longitudinal examination of tablet self-management technology acceptance by patients with chronic diseases: Integrating perceived hand function, perceived visual function, and perceived home space adequacy with the TAM and TPB. Applied Ergonomics, 100, article 103667. 
  • Chen, T.R., Or, C. K. L.*, & Chen, J.Y. (2021). Effects of technology-supported exercise programs on the knee pain, physical function, and quality of life of individuals with knee osteoarthritis and/or chronic knee pain: a systematic review and meta-analysis of randomized controlled trials. Journal of the American Medical Informatics Association, 28(2), 414-423. 
  • Or, C. K. L.*, Liu, K., So, M. K. P., Cheung, B M. Y., Yam, L. Y. C., Tiwari, A., Lau, E., Lau T., Hui, G. P. S., Cheng, H. C., Tan, J., & Cheung, M. T. (2020). Improving self-care in patients carrying coexisting type 2 diabetes and hypertension by technological-surrogate nursing: randomized controlled trial. Journal of Medical Internet Research, 22(3), e16769.
  • Liu, K., Xie, Z., & Or, C. K. L.* (2020). Effectiveness of mobile app-assisted self-care interventions in improving patient outcomes in type 2 diabetes and/or hypertension: A systematic review and meta-analysis of randomized controlled trials. JMIR mHealth and uHealth.
  • Liu, K., Chan, F. Y., Or, C.*, Sun, D. T., Lai, W. S., & So, H. Y. (2019). Heuristic evaluation and simulated use testing of infusion pumps to inform pump selection. International Journal of Medical Informatics, 131, article 103932.
  • Chan, K. L.*, Ip, P., Leung, W. C., Or, C., & Tiwari, A. (2019). Using smartphone-based psychoeducation to reduce postnatal depression among first-time mothers: randomized clinical trial. JMIR mHealth and uHealth, 7(5), e12794.
  • Or, C. K. L.*, Tong, E., Tan, J., & Chan, S. (2018). Exploring factors affecting voluntary adoption of electronic medical records among physicians and clinical assistants of small or solo private general practice clinics. Journal of Medical Systems, 42(7), article 121 (p.1-12). 
  • Cheung, D. S. T., Or, C. K. L.*, So, M. K. P., & Tiwari A. (2018). Usability testing of a smartphone application for delivering Qigong training. Journal of Medical Systems. 42(10), article 191.
  • Xie, Z., Nacioglu, A., and Or, C.* (2018). Prevalence, demographic correlates, and perceived impacts of mobile health app use amongst Chinese adults: cross-sectional survey study. JMIR mHealth and uHealth, 6(4): e103. 
  • Li, S.*, Cox, A. L., Or, C., & Blandford, A. (2018). Effects of monetary reward and punishment on information checking behaviour: An Eye-Tracking Study. Applied Ergonomics, 70, 110-117.
  • Xie, Z. & Or, C. K. L.* (2017). Associations between waiting times, service times and patient satisfaction in an endocrinology outpatient department: a time study and questionnaire survey. INQUIRY: The Journal of Health Care Organization, Provision, and Financing, 54, 1-10.
  • Or, C. K. L.*, Tao, D., & Wang, H. (2017). The effectiveness of the use of consumer health information technology in patients with heart failure: a meta-analysis and narrative review of randomized controlled trials. Journal of Telemedicine and Telecare, 23(1), 155-166.  
  • Or, C. K. L.* & Tao, D. (2016). A 3-month randomized controlled pilot trial of a patient-centered, computer-based self-monitoring system for the care of type 2 diabetes mellitus and hypertension. Journal of Medical Systems, 40(4), 81.
  • Chow, C. B., Wong, W. H. S, Leung, W. C., Tang, M. H. Y., Chan, K. L., Or, C. K. L., Li, T. M. H., Ho, F. K. W., Lo, D., & Ip, P.* (2016). Effectiveness of Internet-based injury prevention program in enhancing mother’s knowledge on child safety. Journal of Medical Internet Research (JMIR)-Research Protocols, 5(4): e205.
  • Holden, R., Valdez, R., Hundt, A., Marquard, J., Montague, E., Nathan-Roberts, D., Or, C., & Zayas-Cabán, T. (2015). Field-based human factors in home and community settings: challenges and strategies. In Proceedings of the Human Factors and Ergonomics Society Annual meeting (Los Angeles, CA, October 26-30, 2015).
  • Or, C. K. L.*, Dohan, M., & Tan, J. (2014). Understanding critical barriers to implementing a clinical information system in a nursing home through the lens of a socio-technical perspective. Journal of Medical Systems. 38(9): 99.
  • Tao, D. & Or, C. K. L.* (2013). Effects of self-management health information technology on glycaemic control for diabetic patients: a meta-analysis of randomized controlled trials. Journal of Telemedicine and Telecare, 19(3), 133-143.
  • Or, C. K. L.* & Tao, D. (2012). Usability study of a computer-based self-management system for older adults with chronic diseases. Journal of Medical Internet Research (JMIR)-Research Protocols, 1(2), e13.
  • Or, C. K. L.*, Karsh, B., Severtson, L., Burke, L., Brown, R., & Brennan, P. F. (2011). Factors affecting home care patients’ acceptance of a Web-based interactive self-management technology. The Journal of the American Medical Informatics Association, 18(1), 51-59.
  • Karsh, B.*, Holden, R. J., & Or, C. K. L. (2011). Human factors and ergonomics of health information technology implementation. In P. Carayon (Ed.), Handbook of Human Factors and Ergonomics in Health Care and Patient Safety. 2nd Ed. (pp. 249-264). Boca Raton, FL: CRC Press.
  • Or, C. K. L. & Karsh, B.* (2009). A systematic review of patient acceptance of consumer health information technology. The Journal of the American Medical Informatics Association, 16(4), 550-560.
  • Or, C. K. L., Valdez, R., Casper, G., Carayon, P., Burke, L. J., Brennan, P. F., & Karsh, B.* (2009). Human factors and ergonomics in home care: Current concerns and future considerations for health information technology. WORK: A Journal of Prevention, Assessment and Rehabilitation, 33(2), 201-209.
  • Or, C. K. L. & Duffy, V. G.* (2007). Development of a facial skin temperature-based methodology for non-intrusive mental workload measurement. Occupational Ergonomics, 7(2), 83-94.
  • Karsh, B.*, Holden, R. J., Alper, S. J., & Or, C. K. L. (2006). A human factors engineering paradigm for patient safety: designing to support the performance of the healthcare professional. Quality and Safety in Health Care, 15(suppl_1), 59-65.

(* denotes corresponding author)