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Fig. 2 | Respiratory Research

Fig. 2

From: Association of serum bilirubin level with lung function decline: a Korean community-based cohort study

Fig. 2

Average annual decline of FEV1 relative to the natural logarithm of serum bilirubin. Notes: Bilirubin is expressed in mg/dL in parentheses. a Univariate relationship (linear regression coefficienct = − 9.93) and b relationship adjusted for age, sex, BMI, FEV1 at baseline, and smoking status (current smoker, former smoker, and never-smoker)(linear regression coefficienct = − 13.09). Abbreviations: BMI, body mass index; FEV1, forced expiratory volume in 1 s

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