Frailty is a clinical syndrome characterized by decreased reserve and resilience [1]. Identifying frailty in critically ill patients can help to guide management, including the selection of appropriate interventions and the development of care plans such as time-limited trials in patients with an unclear benefit from critical care. The Clinical Frailty Scale (CFS) and the FRAIL checklist (1) are both tools proposed to assess frailty in older adults, but they have some key differences. The CFS is a simple, ordinal scale that assigns a score of 1 to 9 based on an assessment of the patient’s level of frailty. It takes into account various physical and functional characteristics. It is quick and easy to use, and it has been validated in multiple settings [2–4]. The FRAIL checklist assesses five domains of frailty: functional impairment, recurrent hospitalizations, advanced malignancy and chronic diseases, irreversible organ failure, and long …