Comparison of clinical characteristics between chronic bronchitis and non-chronic bronchitis in patients with chronic obstructive pulmonary disease

Autor: Joon Young Choi, Hyoung Kyu Yoon, Sang Yeub Lee, Jin Woo Kim, Hye Sook Choi, Yu-Il Kim, Ki-Suck Jung, Kwang Ha Yoo, Woo Jin Kim, Chin Kook Rhee
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: BMC Pulmonary Medicine, Vol 22, Iss 1, Pp 1-9 (2022)
Druh dokumentu: article
ISSN: 1471-2466
DOI: 10.1186/s12890-022-01854-x
Popis: Abstract Background Chronic bronchitis (CB) is associated with poor outcomes in patients with chronic obstructive pulmonary disease. The aim of this study was to identify the characteristics that distinguish chronic bronchitis (CB) from non-CB. In addition, the features of mild CB versus severe CB were compared and a cut-off level was defined according to CAT1 and CAT2 scores. Methods This study was based on the Korea COPD Subgroup Study (KOCOSS) database, constructed in a multicenter COPD cohort study that recruited patients from 54 centers. CB was defined as CAT1 and CAT2 scores ≥ 3; severe CB was defined as CAT1 and CAT2 scores ≥ 4, while mild CB was defined as either a CAT1 or a CAT2 score
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