Real-World Measures of Cardiorespiratory Function Can Stratify Primary Sjogren's Syndrome Participants with Persistent Fatigue.

Many individuals with various chronic diseases experience debilitating fatigue that substantially impacts their quality of life. Currently, assessments of fatigue rely on patient reported outcomes (PROs), which are subjective and prone to recall bias. Wearable devices, however, can provide valid and continuous estimates of human activity and physiology, which are essential components of health, and may provide objective evidence of fatigue.