Objectives: To determine the association between frailty and short-term mortality in older adults hospitalized for coronavirus disease 2019 . Design: Retrospective single-center observational study. Setting and participants: Eighty-one patients with COVID-19 confirmed by reverse-transcriptase polymerase chain reaction (RT-PCR), at the Geriatrics department of a general hospital in Belgium. Measurements: Frailty was graded according to the Rockwood Clinical Frailty Scale (CFS). Demographic, biochemical, and radiologic variables, comorbidities, symptoms, and treatment were extracted from electronic medical records. Results: Participants (N ¼ 48 women, 59%) had a median age of 85 years (range 65-97 years) and a median CFS score of 7 (range 2-9); 42 (52%) were long-term care residents. Within 6 weeks, 19 patients died. Mortality was significantly but weakly associated with age (Spearman r ¼ 0.241, P ¼ .03) and CFS score (r ¼ 0.282, P ¼ .011), baseline lactate dehydrogenase (LDH; r ¼ 0.301, P ¼ .009), lymphocyte count (r ¼ À0.262, P ¼ .02), and RT-PCR cycle threshold (Ct, r ¼ À0.285, P ¼ .015). Mortality was not associated with long-term care residence, dementia, delirium, or polypharmacy. In multivariable logistic regression analyses, CFS, LDH, and RT-PCR Ct (but not age) remained independently associated with mortality. Both age and frailty had poor specificity to predict survival. A multivariable model combining age, CFS, LDH, and viral load significantly predicted survival. Conclusions and Implications: Although their prognosis is worse, even the oldest and most severely frail patients may benefit from hospitalization for COVID-19, if sufficient resources are available.

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Background: Older adults with coronavirus disease 2019 (COVID−19) face an increased risk of adverse health outcomes including mortality. Ethical guidelines consider allocation of limited resources based on likelihood of survival, frailty, co−morbidities and age. However, the association of frailty with clinical outcomes in older COVID−19 patients remains unclear. Objectives: To determine the association between frailty and short-term mortality in older adults hospitalized for COVID−19. Design: Retrospective single-center observational study. Setting and participants: N = 81 patients with COVID−19 confirmed by reverse-transcriptase polymerase chain reaction (RT−PCR), at the Geriatrics department of Imelda general hospital, Belgium. Measurements: Frailty was graded according to the Rockwood Clinical Frailty Scale (CFS). Demographic, biochemical and radiological variables, co−morbidities, symptoms and treatment were extracted from electronic medical records. Results: Participants (N = 48 women, 59%) had a median age of 85 years (range 65 − 97 years), median CFS score of 7 (range 2 − 9), and 42 (52%) were long−term care residents. Within six weeks, eighteen patients died. Mortality was significantly but weakly associated with age (Spearman r = 0.241, P = 0.03) and CFS score (r = 0.282, P = 0.011), baseline lactate dehydrogenase (LDH) (r = 0.301, P = 0.009), lymphocyte count (r = −0.262, P = 0.02) and RT-PCR Ct value (r = −0.285, P = 0.015). Mortality was not associated with long-term care residence, dementia, delirium or polypharmacy. In multivariable logistic regression analyses, CFS, LDH and RT-PCR Ct values (but not age) remained independently associated with mortality. Both age and frailty had poor specificity to predict survival. A multivariable model combining age, CFS, LDH and viral load significantly predicted survival. Conclusions and implications: Although their prognosis is worse, even the oldest and most severely frail patients may benefit from hospitalization for COVID−19, if sufficient resources are available.

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