The Mean and Variability of Morning Hour Activity Over 2-3 Days Predict 5-Year Mortality and Frailty Risk in a National Sample of Older Adults.
BACKGROUND Activity pattern features measured by continuous accelerometry are strongly associated with frailty, making accelerometry a promising, scalable screening tool for frailty. However, adherence to typical 5-7 day wear protocols decreases with age, reducing feasibility. Whether accelerometry measures collected o...