Responsiveness and MCID Estimates for CAT, CCQ, and HADS in Patients With COPD Undergoing Pulmonary Rehabilitation: A Prospective Analysis

The SGRQ, CAT, CCQ, and HADS are responsive to pulmonary rehabilitation in patients with COPD. We propose MCID estimates ranging between −3.0 and −2.0 points for CAT; −0.5 and −0.3 points for CCQ, −1.8 and −1.3 points for HADS-Anxiety, and −1.7 and −1.5 points for HADS-Depression.