ArticleBMC pulmonary medicine2022
Comparison of clinical characteristics between chronic bronchitis and non-chronic bronchitis in patients with chronic obstructive pulmonary disease.
Article in BMC pulmonary medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 16 citations in OpenAlex.
- The effect of nebulized N-acetylcysteine on the phlegm of chronic obstructive pulmonary disease: the NEWEST study.BMC pulmonary medicine · 2024Trial
- Exploring Relevance of Graded Sputum Production in Stable COPD in Clinical Practice.International journal of chronic obstructive pulmonary disease · 2026Article
- Low sRAGE Level is Associated with Increased Future Exacerbation Risk in Mild-to-Moderate COPD and Patients with Chronic Bronchitis Symptoms.International journal of chronic obstructive pulmonary disease · 2026Observational
- Clinical Burden of People with Symptomatic and Exacerbating COPD While on Triple Inhaled Therapy.Journal of clinical medicine · 2025Article
- Impact of bronchitis variability on outcomes of COPD.BMJ open respiratory research · 2025Observational
- Association of heart rate variability index with depressive symptoms and lung function in chronic obstructive pulmonary disease.World journal of psychiatry · 2025Article
- Kernel Conversion Improves the Correlation between the Extent of Emphysema and Clinical Parameters in Chronic Obstructive Pulmonary Disease: A Multicenter Cohort Study.Tuberculosis and respiratory diseases · 2025Article
- Characterising airway inflammation in Aboriginal and Torres Strait Islander and non-Aboriginal and Torres Strait Islander adults with asthma and COPD.BMJ open respiratory research · 2025Article
- Interventional pulmonology for chronic inflammatory airway diseases.Chinese medical journal pulmonary and critical care medicine · 2024Review
- Obstructive Sleep Apnea and Medical Comorbidities in the Asian Population: Evidence From a Nationwide Healthcare System Data in South Korea.Psychiatry investigation · 2024Article
- Prevalence and risk factors of patients with chronic bronchitis among Iraqi adults.Journal of medicine and life · 2023Article
- The clinical characteristics and outcomes of different inhaled therapies in chronic obstructive pulmonary disease patients with frequent cough.Annals of medicine · 2023Article
- Associations between depression and anxiety index and frequency of acute exacerbation in chronic obstructive pulmonary disease.Therapeutic advances in respiratory diseaseArticle
Corrections and comments
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Authors and funding
10 authors at 10 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundChronic 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.
methodsThis 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 < 4. Baseline characteristics, 1-year exacerbation rate, and 3-year FEV
resultsAmong the 2162 patients enrolled in this study, 497 (23%) had CB. These patients were more likely than non-CB patients to be current smokers; they also had higher symptom and depression/anxiety scores. Lung function tests showed lower FEV
conclusionsCB patients had worse symptoms and lung function than non-CB patients; CB patients also had more frequent moderate-to-severe exacerbation. Patients with severe CB had higher symptom scores and more frequent severe exacerbation than did patients with mild CB.
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