Concordance of self- and proxy-rated worry and anxiety symptoms in older adults with dementia.

We compared the psychometric performance of two validated self-report anxiety symptom measures when rated by people with dementia versus collaterals (as proxies). Forty-one participants with mild-to-moderate dementia and their respective collaterals completed the Geriatric Anxiety Inventory, the Penn State Worry Questionnaire-Abbreviated, and a structured diagnostic interview. We used descriptive and nonparametric statistics to compare scores according to respondent characteristics.