The PROMIS Global Health-10 is a 10-item patient-reported questionnaire that assesses generic HRQoL compared with normal values for the general population with the response options presented as a 5-point (as well as a single 11-point) rating scale.
The results of the questions are used to calculate two summary scores: a Global Physical Health Score and a Global Mental Health score. These scores are then standardized to the general population, using the “T-Score”. The average “T-Score” for the United States population is 50 points, with a standard deviation of 10 points. Higher scores are indicative of a healthier patient.