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Plain English summary Assessment of patient-reported outcomes (e.g., symptoms, functional status, and other quality of life domains) by a proxy on behalf of the patient is helpful when patient self-report is not possible or when a complementary perspective may inform care. Determining how well older adult patients and their caregivers agree on the patient’s pain, depression, anxiety, and functioning is important in investigating and managing these core clinical domains. In this study, patient-caregiver agreement was evaluated for four commonly-used scales that assess depression (PHQ-9), anxiety (GAD-7), pain (PEG), and multi-dimensional symptom and functional impairment (SymTrak). Total score and item-level scores were similar between patients and caregivers when averaged at the group level. Agreement was higher for more physically oriented domains (pain and SymTrak) than psychological conditions (depression and anxiety). Higher (worse) patient-reported scale scores were associated with caregiver underreporting, whereas higher caregiver task difficulty was associated with overreporting. Proxy report may be sufficiently accurate in research when studying group differences. However, proxy reports should be interpreted more cautiously in individual patients with psychological symptoms or higher symptom severity, or where there is caregiver diffficulty. |
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