“…Initially developed in psychometrics to assess the severity of behavioral troubles or disturbances [1,2], ORS became essential in health research tools to measure clinical outcomes such as symptoms [3,4], pathologist findings [5,6], disease severity [7,8], treatment response [9,10], and health-related quality of life [11,12]. The use of ORS allows clinicians to classify patients, in an objective and homogeneous way, into different patients' categories for which standardized treatment and management could be defined.…”