Characteristics and self-rated health of overlap syndrome.

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Characteristics and self-rated health of overlap syndrome.

Author(s): Jung Wha Chung ¹ , Kyoung Ae Kong ² , Jin Hwa Lee ¹ , Seok Jeong Lee ¹ , Yon Ju Ryu ¹ , Jung Hyun Chang ¹

Publication date (Electronic): 2014

Journal: International journal of chronic obstructive pulmonary disease

Publisher: Informa UK Limited

Keywords: COPD, asthma, chronic obstructive lung disease, overlap syndrome, self-rated health

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Abstract

Overlap syndrome shares features of both asthma and chronic obstructive pulmonary disease (COPD). The aim of this study was to investigate characteristics of overlap syndrome and their effect on self-rated health (SRH).

Most cited references 23

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Asthma as a risk factor for COPD in a longitudinal study.

Stefano Guerra, R R Barbee, J L Sherrill … (2004)

For several years, asthma and COPD have been regarded as distinct entities, with distinct clinical courses. However, despite distinctive physiologic features at the time of diagnosis, and different risk factors, the two diseases over time may develop features that are quite similar. To evaluate the association between physician-diagnosed asthma and the subsequent development of COPD in a cohort of 3,099 adult subjects from Tucson, AZ. A prospective observational study. Participants completed up to 12 standard respiratory questionnaires and 11 spirometry lung function measurements over a period of 20 years. Survival curves (with time to development of COPD as the dependent variable) were compared between subjects with asthma and subjects without asthma at the initial survey. Subjects with active asthma (n = 192) had significantly higher hazard ratios than inactive (n = 156) or nonasthmatic subjects (n = 2751) for acquiring COPD. As compared with nonasthmatics, active asthmatics had a 10-times-higher risk for acquiring symptoms of chronic bronchitis (95% confidence interval [CI], 4.94 to 20.25), 17-times-higher risk of receiving a diagnosis of emphysema (95% CI, 8.31 to 34.83), and 12.5-times-higher risk of fulfilling COPD criteria (95% CI, 6.84 to 22.84), even after adjusting for smoking history and other potential confounders. Physician-diagnosed asthma is significantly associated with an increased risk for CB, emphysema, and COPD.

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Overlap syndrome of asthma and COPD predicts low quality of life.

Ari Lindqvist, L Tammilehto, Tari Haahtela … (2011)

In clinical practice, patients whose airway disease shares features of both asthma and chronic obstructive pulmonary disease (COPD) remain poorly recognized. The study population consisted of 1546 patients with a diagnosis of asthma or COPD or both. Based on patient-reported outcomes and retrospective medical record data, the study population was divided into three groups: ( 1 ) asthma only, ( 2 ) COPD only, and ( 3 ) both asthma and COPD (overlap syndrome group). We evaluated patient characteristics associated with health-related quality of life (HRQoL). In many respects, the overlap group fell between the asthma and COPD groups. In the overlap group, however, HRQoL was the poorest of all. In the logistic regression model, with the asthma group as the reference, both the overlap and the COPD group showed higher risk for low HRQoL [odd ratio (OR): 1.9; 95% confidence interval (CI): 1.2-3.2; and OR: 1.8, 95% CI: 1.0-3.2; respectively]. In addition, female gender, obesity, duration of disease, disability pension, and coexisting cardiovascular disease were associated with low HRQoL across the study population. Patients with overlapping asthma and COPD differed from those patients with asthma or COPD only. Overlap syndrome was associated with low HRQoL.

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Prevalence of chronic obstructive pulmonary disease in Korea: a population-based spirometry survey.

Ki Jung Chang, Woo Lew, … (2005)

Although chronic obstructive pulmonary disease is a leading cause of mortality and morbidity worldwide, there are only limited data on its prevalence, especially in Asia. A population-based epidemiologic survey of chronic obstructive pulmonary disease in a representative national sample was conducted using spirometry. A stratified multistage clustered probability design was used to select a nationally representative sample. The survey was performed in conjunction with the second Korean National Health and Nutrition Examination Survey of 9,243 adults over the age of 18 years. The participation rate was 88.8% for questionnaires and 52.1% for spirometry. The prevalence of chronic obstructive pulmonary disease based on Global Initiative for Chronic Obstructive Lung Disease (GOLD) criteria (a ratio of FEV1 to FVC of less than 0.7) was 17.2% (men, 25.8%; women, 9.6%) among subjects older than 45 years. Among adults of all ages (age>18 years), the prevalence of airflow obstruction was 7.8% (10.9% in men, 4.9% in women). The majority of these cases were found to be mild in degree, and only a minority of these subjects had received physician diagnosis or treatment. Multivariate analysis revealed that age over 65 years, male sex, smoking more than 20 pack-years, and low income were independent predictors for chronic obstructive pulmonary disease. Seventeen percent of Korean adults over the age of 45 years have mild chronic obstructive pulmonary disease.

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Author and article information

Journal

Journal ID (iso-abbrev): Int J Chron Obstruct Pulmon Dis

Title: International journal of chronic obstructive pulmonary disease

Publisher: Informa UK Limited

ISSN (Electronic): 1178-2005

ISSN (Print): 1176-9106

Publication date (Electronic): 2014

Volume: 9

Affiliations

[1 ] Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, School of Medicine, Ewha Womans University, Seoul, Korea.

[2 ] Clinical Trial Center, Ewha Womans University Mokdong Hospital, Seoul, Korea.

Article

Publisher Item ID: copd-9-795

DOI: 10.2147/COPD.S61093

PMC ID: 4113567

PubMed ID: 25092973

SO-VID: 3eb61a0c-ab57-42d1-bc37-45b13003c163

History

Keywords: COPD,asthma,chronic obstructive lung disease,overlap syndrome,self-rated health

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Keywords: COPD, asthma, chronic obstructive lung disease, overlap syndrome, self-rated health

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Characteristics and self-rated health of overlap syndrome.

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Abstract

Most cited references 23

Asthma as a risk factor for COPD in a longitudinal study.

Overlap syndrome of asthma and COPD predicts low quality of life.

Prevalence of chronic obstructive pulmonary disease in Korea: a population-based spirometry survey.

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