主题：Evaluating the Cost-Effectiveness of Platform Screen Door Installation: Evidence and Lessons from Hong Kong’s East Rail Line
主讲人：香港大学叶兆辉教授
主持人：统计与数据科学学院林华珍教授
时间：2026年10月28日（周三）下午4:30-5:30
地点：柳林校区弘远楼408会议室
主办单位：统计与数据科学学院和统计研究中心 科研处
主讲人简介：
Professor Paul S. F. Yip is the Chair Professor (Population Health) at the Department of Social Work and Social Administration, and the Director of the HKJC Centre for Suicide Research and Prevention at the University of Hong Kong. He is a member of the Advisory Committee on Mental Health of the Health Bureau of the Hong Kong SAR Government, a member of the Insurance Compliant Bureau, a honorary advisor and a chair of the research committee of the Family Planning Association of Hong Kong, a board member of the Unicef (Hong Kong) and Suicide Prevention Services. He also holds editorial board memberships at internationally-recognised journals like Social Science & Medicine and Crisis. He has been awarded a medal of honor (MH) by the Hong Kong SAR Government for his service to promoting mental wellness amongst youth in Hong Kong.
Professor Yip’s research expertise lies in Biostatistics, Demography, Population Health Studies, and Suicide Research and Prevention. He has served as the Principal Investigator on a number of funded research projects supported by major funding bodies like The Hong Kong Jockey Club Charities Trust and The Government of the Hong Kong Special Administrative Region. He has published over 750 journal articles, scholarly books and book chapters, and reports.
内容提要：
Background: Platform screen doors effectively prevent railway falls and suicides, but high costs impede widespread implementation. This study evaluates the cost-effectiveness of installing platform screen doors along Hong Kong’s East Rail Line and explores affordable partial installation alternatives based on incident characteristics.
Methods: Data on platform-fall incidents from 2014 to 2022 (n = 96) were obtained from the MTR Corporation. Spatial and demographic patterns were examined using Poisson and binomial tests. We evaluated the cost-effectiveness of the recent installation project using the incremental cost-effectiveness ratio, defined as the cost per disability-adjusted life year averted over a 25-year time horizon.
Results: The installation project along the East Rail Line is estimated to avert 130.06 disability-adjusted life years annually. The incremental cost-effectiveness ratio is 28,689 US dollars per disability-adjusted life year, meeting the World Health Organization cost-effectiveness criterion by the eleventh year. Spatial analysis revealed that severe injuries were significantly concentrated at the end of the platform where trains enter stations. Based on this finding, we explored an alternative installation strategy that covers only the first one-third of each platform. Compared with a full installation, this partial strategy could still prevent approximately 78% of disability-adjusted life year losses while improving cost-effectiveness by about 15 %, at an estimated 24,530 US dollars per disability-adjusted life year.
Discussion: Platform screen door installation is highly cost-effective in Hong Kong's dense urban rail network. Where financial resources are limited, targeted installations in high-risk platform zones offer an economically efficient, viable alternative.
