The Joint Effects of Some Beverages Intake and Smoking on Chronic Obstructive Pulmonary Disease in Korean Adults: Data Analysis of the Korea National Health and Nutrition Examination Survey (KNHANES), 2008–2015

Ji Eun Min, Da-An Huh and Kyong Whan Moon
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Ji Eun Min: School of Health and Environmental Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
Da-An Huh: Department of Health Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
Kyong Whan Moon: Department of Health Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea

IJERPH, 2020, vol. 17, issue 7, 1-13

Abstract: Some beverages and smoking cause an inflammatory response in the lungs and airways in a similar way, ultimately affecting chronic obstructive pulmonary disease (COPD) occurrence. Using a nationally representative health survey database, this study investigates the individual and joint effects of consumption of different beverages and smoking on COPD. This study is a cross-sectional analysis of 15,961 Korean adults in the Korea National Health and Nutritional Examination Survey of 2008–2015. COPD was defined as forced expiratory volume in 1 s (FEV 1 ) divided by forced vital capacity (FVC) <0.70. We used multiple linear and logistic regression models to examine the association of beverage consumption and smoking with an FEV 1 /FVC ratio and odds ratio (OR) for COPD. The mean FEV 1 /FVC ratio decreased with increasing soda intake ( p = 0.016), coffee intake ( p = 0.031), and smoking status; however, the mean FEV 1 /FVC ratio increased with increasing green tea intake frequency ( p = 0.029). When soda intake increased to 10 times/month, the OR of having COPD increased to 1.04 times (95% CI: 1.01, 1.07). The positive joint effect of soda intake and smoking on COPD was marginally significant ( p = 0.058). We found that soda intake, coffee intake, and smoking increased airflow limitation while green tea intake decreased it. In addition, soda intake and smoking had a positive joint effect on COPD in the Korean population.

Keywords: soda; coffee; green tea; smoking; lung function; chronic obstructive pulmonary disease; interaction; Korean adults (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
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