During this unprecedented and ongoing pandemic, the need for healthcare professionals to prognosticate has arguably never been greater (1). Early risk-stratification of older adults admitted with COVID-19 is particularly important to mobilise healthcare professionals to manage their often complex care needs (2). Although frail older adults have higher mortality with COVID-19, given their inherent heterogeneity, predicting outcomes in this population is challenging (3). Multiple scales are available to risk-stratify patients with COVID-19 (4). Despite this, their predictive validity among those who are frail and hence, at highest risk of mortality and critical illness, is not yet established.