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KMID : 0191120140290060825
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Journal of Korean Medical Science
2014 Volume.29 No. 6 p.825 ~ p.830
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Prevalence of Chronic Sputum and Associated Factors in Korean Adults
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Lee Bo-ram
Kim Yu-Il
Kim Sun-Min
Lee Ho-Sung
Yoon Seong-Hoon
Yu Jin-Yeong
Ban Hee-Jung
Kwon Yong-Soo
Oh In-Jae
Kim Kyu-Sik
Kim Young-Chul
Lim Sung-Chul
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Abstract
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Chronic sputum is a troublesome symptom in many respiratory diseases. The prevalence of chronic sputum varies from 1.2% to 13% according to the country. The purpose of this study was to estimate the prevalence of chronic sputum and to find its associated factors in a general Korean population. We analyzed the data of the Korea National Health and Nutrition Examination Survey 2010 and 2011. A total number of 6,783 subjects aged 40 yr or more were enrolled in this study with 3,002 men and 3,781 women. As a result, the prevalence of chronic sputum was 6.3% (n=430). Significant risk factors for chronic sputum by multivariate analysis were: age (≥70 yr) (odds ratio [OR], 1.954; 95% confidence interval [CI], 1.308-2.917), current smoking (OR, 4.496; 95% CI, 3.001-6.734), chronic obstructive pulmonary disease (COPD) (OR, 1.483; 95% CI, 1.090-2.018), and tuberculosis (OR, 1.959; 95% CI, 1.307-2.938). In conclusion, the prevalence of chronic sputum in Korea was in the intermediate range compared with other countries. Smoking is a preventable risk factor identified in this study, and major respiratory diseases, such as COPD and tuberculosis, should be considered in subjects with chronic sputum.
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KEYWORD
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Chronic Sputum, Prevalence, Associated Factor
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