PT - JOURNAL ARTICLE AU - Chansoo Moon AU - Sae Byol Kim AU - Kyung Soo Chung AU - Seon Cheol Park AU - Won Jai Jung AU - Eun Young Kim AU - Ji Ye Jung AU - Young Ae Kang AU - Moo Suk Park AU - Young Sam Kim AU - Se Kyu Kim AU - Chul Min Ahn AU - Joon Chang TI - Comorbidity in chronic obstructive pulmonary disease (COPD): Data from the fourth Korean National Health and Nutrition Examination Survey (KNHANES IV) DP - 2012 Sep 01 TA - European Respiratory Journal PG - P456 VI - 40 IP - Suppl 56 4099 - http://erj.ersjournals.com/content/40/Suppl_56/P456.short 4100 - http://erj.ersjournals.com/content/40/Suppl_56/P456.full SO - Eur Respir J2012 Sep 01; 40 AB - Introduction: Many comorbidities frequently coexist with chronic obstructive pulmonary disease (COPD) and they could influence on poor prognosis. We tried to determine which comorbidities frequently coexist in individuals with COPD using population based nationwide survey.Method: We used data obtained in the first (2007) and second year (2008) of the Fourth Korean National Health and Nutrition Examination Survey (KNHANES IV) and included participants aged ≥40 years. Subjects with FEV1/FVC<0.7 was defined as individuals with COPD. Participants with history of asthma, pulmonary tuberculosis and bronchiectasis were excluded.Result: Baseline characteristics were not significantly different between COPD group (n=357) and control group (n=357) except spirometric findings. COPD group was associated with increased risk of low BMI (<18.5 Kg/m2) (OR 3.53, 95% CI 1.29-9.68; p=0.014) and associated with decreased risk of hypertension (OR 0.73, 95% CI 0.54-0.99; p=0.042) and hypercholesterolemia (OR 0.59, 95% CI 0.37-0.93; p=0.022). The incidence of low BMI uniquely increased with the severity of airflow obstruction (1.4% in control subjects, 3.6% in GOLD stage I, 4.5% in GOLD stage II and 30% in GOLD stage III+; p<0.0001). However, the incidence of hypertension and hypercholesterolemia did not.Conclusion: Incidence of low BMI uniquely increased with the severity of airflow limitation. However, more study is needed to confirm whether low BMI is the cause of COPD or the result of COPD.