This prospective observational study will investigate the correlation of frailty in relation to serious outcomes. Serious outcomes are defined as: mortality within 30 days, admission to hospital, length of stay in the Emergency Department(ED), in hospital length of stay and revisits to the ED.

The exposure, frailty, will be assessed according to Clinical Frailty Scale. ED patients >65 years of age in a Swedish regional health care system (Region Östergötland, Sweden) comprising three EDs in Linköping, Norrköping and Motala. The outcomes will be compared according to the degree of frailty and censored over 7, 30 and 90 days respectively.

Frailty is a common clinical syndrome in older adults that carries an increased risk for poor health outcomes including falls, incident disability, hospitalization, and mortality.

The clinical frailty scale (CFS) is a measure of frailty based on clinical judgement in a 9 level scale, categorized as "vulnerable" (1-4), "mildly frail" (5), moderatly frail (6) and severely and very severely frail (7-8).". A validation study of the CFS in community-dwelling older people showed that it performed better than measures of cognition, function or comorbidity in assessing risk for death. In a prospective observational study including consecutive ED patients aged 65 years or older The Hosmer-Lemeshow test indicated a good agreement between predicted probability and observed frequency of 30-day mortality and ICU admission.

The aim of this study will be to investigate if the fraily, assessed according to CFS, is associated with increased 30-day mortality. in a Swedish Emergency Care context. Secondary outcomes included 7-and 90-day mortality, ED length of stay, hospital admission, hospital length of stay, subsequent falls and medication changes. Additionally, we collect data on morbidity and comorbidities to assess the association with the level of frailty. Since this is a multicenter study, possible geographic differences will be studied as well. Based on the results of this study, possible interventions could be identified to improve the care of the frail geriatric patients presenting at the ED.

Inclusion Criteria:

• ≥65 years, able to answer any questions, alternatively have a proxy

Exclusion Criteria:

- Patients: <65 years

Patients of all genders at the age of ≥65 years seeking medical care at the three ED instances in Region Östergötland.