Gil HI, Zo S, Jones PW, et al. - This study was carried out to assess the distribution and clinical implication of each CAT item, stratified by chronic obstructive pulmonary disease (COPD) assessment test (CAT) severity group, in stable chronic obstructive pulmonary disease (COPD) patients. Researchers conducted a cross-sectional study at a single referral hospital in South Korea. They retrospectively distinguished spirometry confirmed COPD patients with CAT measured at the first clinical visit. Individuals were classified into three groups: low (0 ≤ CAT < 10), medium (10 ≤ CAT < 20), and high (20 ≤ CAT ≤ 40) impact group. The study enrolled a sum of 815 individuals, and mean (SD) forced expiratory volume in 1 s (FEV1) was 62.8 (17.4) % pred. The outcomes imply that whilst CAT total score captures the overall impact of COPD, each item of the CAT contains potentially useful information in understanding the patient’s symptom burden.