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Original Research

Comorbidities in obstructive lung disease in Korea: data from the fourth and fifth Korean National Health and Nutrition Examination Survey

Hee Jin ParkDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Institute of Chest Disease, Yonsei University College of Medicine, Seoul, South Korea

Ah Young LeemDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Institute of Chest Disease, Yonsei University College of Medicine, Seoul, South Korea

Sang Hoon LeeDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Institute of Chest Disease, Yonsei University College of Medicine, Seoul, South Korea

Ju Han SongDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Institute of Chest Disease, Yonsei University College of Medicine, Seoul, South Korea

Moo Suk ParkDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Institute of Chest Disease, Yonsei University College of Medicine, Seoul, South Korea

Young Sam KimDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Institute of Chest Disease, Yonsei University College of Medicine, Seoul, South Korea

Se Kyu KimDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Institute of Chest Disease, Yonsei University College of Medicine, Seoul, South Korea

Joon ChangDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Institute of Chest Disease, Yonsei University College of Medicine, Seoul, South Korea

Kyung Soo ChungDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Institute of Chest Disease, Yonsei University College of Medicine, Seoul, South KoreaCorrespondence[email protected]

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Figures & data

Figure 1 Flowchart for selection of study subjects.

Notes: Normal pattern = FEV₁/FVC ≥70% and FEV₁ ≥80% predicted; restrictive pattern = FEV₁/FVC ≥70% and FEV₁ <80% predicted; obstructive pattern = FEV₁/FVC <70%.
Abbreviations: KNHANES, Korean National Health and Nutrition Examination Survey; PFT, pulmonary function test; FEV₁, forced expiratory volume in 1 second; FVC, forced vital capacity.

Table 1 Baseline characteristics of study population

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Table 2 Comorbidities according to lung function

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Table 3 Comorbidities according to sex and lung function in subjects with obstructive airflow limitation

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Figure 2 Prevalence of hypertension (A), DM (B), underweight (C) and overweight (D), and osteoarthritis (E) by sex and severity of obstructive airflow limitation.

Notes: Normal = FEV₁/FVC ≥70% and FEV₁ ≥80% predicted; obstructive = FEV₁/FVC <70%; mild = FEV₁ ≥80% predicted; moderate =50% ≤ FEV₁ <80% predicted; severe FEV₁ <50% predicted.

Abbreviations: BMI, body mass index; DM, diabetes mellitus; FEV₁, forced expiratory volume in 1 second; FVC, forced vital capacity.

Figure 2 Prevalence of hypertension (A), DM (B), underweight (C) and overweight (D), and osteoarthritis (E) by sex and severity of obstructive airflow limitation.Notes: Normal = FEV1/FVC ≥70% and FEV1 ≥80% predicted; obstructive = FEV1/FVC <70%; mild = FEV1 ≥80% predicted; moderate =50% ≤ FEV1 <80% predicted; severe FEV1 <50% predicted.Abbreviations: BMI, body mass index; DM, diabetes mellitus; FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity.

Figure 3 Prevalence of hypercholesterolemia (A), hypertriglyceridemia (B), low HDL cholesterol (C), and high LDL cholesterol (D), by sex and severity of obstructive airflow limitation.

Notes: Normal = FEV₁/FVC ≥70% and FEV₁ ≥80% predicted; Obstructive = FEV₁/FVC <70%; Mild = FEV₁ ≥80% predicted; moderate =50% ≤ FEV₁ <80% predicted; severe FEV₁ <50% predicted.
Abbreviations: FEV₁, forced expiratory volume in 1 second; FVC, forced vital capacity; HDL, high-density lipoprotein; LDL, low-density lipoprotein.

Table S1 Comorbidities according to self-reported questionnaire

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Comorbidities in obstructive lung disease in Korea: data from the fourth and fifth Korean National Health and Nutrition Examination Survey

Table 1 Baseline characteristics of study population

Table 2 Comorbidities according to lung function

Table 3 Comorbidities according to sex and lung function in subjects with obstructive airflow limitation

Table S1 Comorbidities according to self-reported questionnaire

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Comorbidities in obstructive lung disease in Korea: data from the fourth and fifth Korean National Health and Nutrition Examination Survey

Figures & data

Table 1 Baseline characteristics of study population

Table 2 Comorbidities according to lung function

Table 3 Comorbidities according to sex and lung function in subjects with obstructive airflow limitation

Table S1 Comorbidities according to self-reported questionnaire

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