A prospective cohort of South Korean patients over 65 years admitted from the ED with critical illness had  Clinical Frailty Scale (CFS) performed on them. Those with a high CFS had increased 3 month mortality. CFS helps us prognosticate morbidity and mortality in our older critically ill patients. 

References

The Prognostic Value of the Clinical Frailty Scale in Critically Ill Older Adult Patients in the Emergency Department

Um, Young Woo et al.

Journal of Emergency Medicine, Volume 0, Issue 0