Korean J Fam Med.  2015 May;36(3):128-134. 10.4082/kjfm.2015.36.3.128.

Prevalence of Chronic Obstructive Lung Disease in Korea Using Data from the Fifth Korea National Health and Nutrition Examination Survey

• Park H
• Jung SY
• Lee K
• Bae WK
• Lee K
• Han JS
• Kim S
• Choo S
• Jeong JM
• Kim HR
• Ro HJ
• Jeong H

• KMID: 2304115
• DOI: http://doi.org/10.4082/kjfm.2015.36.3.128

Abstract

BACKGROUND
Chronic obstructive pulmonary disease (COPD) is the fifth leading cause of death worldwide. The awareness and treatment rate of the disease are low despite its relatively high prevalence. With the added data, this study aimed to identify changes in prevalence and risk factors of COPD using the data from the 5th KNHNES.
METHODS
The subjects of this study were 8,969 individuals aged 40 and older who satisfied suitability and reproducibility for pulmonary function tests. The prevalence, awareness and risk factors of COPD were predicted based on the questionnaires on gender, age, educational level, income level, smoking history, body mass index (BMI) and other COPD related questions.
RESULTS
Diagnosis of COPD was based on the airflow limitation (forced expiratory volume in one second/forced vital capacity <0.7) of the Global Initiative for Chronic Obstructive Lung Disease (GOLD) criteria. The prevalence of COPD from 2010 to 2012 was 13.7%, of which 23.3% was men and 6.5% women. The prevalence was on the rise, with 12.2% in 2010, 13.2% in 2011, and 15.5% in 2012. In GOLD stage 1, the percentages of those who had cough or sputum and smoking history were 12.1% and 75.5%, respectively, but only 0.1% was diagnosed with COPD. Even after adjusting for asthma and tuberculosis, men, old age, larger amount of smoking were linked with a higher prevalence of COPD, and obese and higher educational level were associated with a lower prevalence of COPD.
CONCLUSION
The prevalence of COPD in Korea has been increasing every year, and a higher prevalence was associated with male, older age, more amount of smoking, lower educational level and lower BMI.

Keyword

Chronic Obstructive Pulmonary Disease; Pulmonary Function Tests; Prevalence; Korea

MeSH Terms

Asthma
Body Mass Index
Cause of Death
Cough
Diagnosis
Female
Humans
Korea
Male
Nutrition Surveys*
Prevalence*
Pulmonary Disease, Chronic Obstructive*
Surveys and Questionnaires
Respiratory Function Tests
Risk Factors
Smoke
Smoking
Sputum
Tuberculosis
Vital Capacity
Smoke