An ageing population has a significant impact in terms of health care costs to the elderly, their families and societies. The elderly consume a greater volume of health care facilities and bear out-of-pocket (OOP) health expenditure for their age-related diseases (ARD) physically or mentally. The most common ARD that relates to cognitive functions is mild cognitive impairment (MCI) and dementia. The purpose of this study was to examine the socio-demographic, cognitive status and comorbidities and hospital utilisation factors that affect the likelihood of catastrophic health expenditure (CHE) among the elderly in Malaysia. A survey using multi-stage random sampling techniques recruited 2274 elderly people (60 years and above) in Johor, Perak...