Abstract
Background: For older patients with cancer, maintaining or regaining their ability to care of themselves is of major interest. Which tools are appropriate to measure this? Different tools to assess functional status (FS) are established in geriatric and oncological care, but they have been compared poorly in the past. Patients and Methods: Within a prospective cohort trial, we included 483 patients: 198 older patients with cancer, 156 younger patients with cancer, and 129 older patients with benign disease. FS was assessed as Eastern Cooperative Oncology Group performance status (ECOG-PS), activities of daily living (ADL), and instrumental activities of daily living (IADL). Results were compared for their differences in identifying patients as functionally compromised. Summary: The relative frequency of cancer patients with limitations in ECOG-PS, ADL, and IADL, respectively, increased from 25.7, 13.5, and 17.9% in those <60 years of age to 50.0, 47.1, and 66.7% in those ≥80 years. Results in older patients with cancer were comparable to older patients with benign disease. In older patients with cancer, 20.7 and 21.6% with a good ECOG-PS had limitations in ADL and IADL, respectively; of those without limitations in ADL and IADL, 34.7 and 26.0%, respectively, had a poor ECOG-PS. Treatment approach (curative vs. palliative) was found to be significantly associated with functional limitations. Key Messages: Geriatric and oncological measure of FS report differences in functional impairment. Geriatric functional measures are more sensitive to age-related changes and should be included as patient-reported outcomes in clinical trials and care.
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