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. 2020 Oct 13;15:2477–2486. doi: 10.2147/COPD.S265676

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© 2020 Zhu et al.

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The effect of BMI on lung function in the patients with COPD. Statistical analysis was performed using multiple linear regression analysis. (A and B) BMI used as the quantitative and qualitative variable to assess the relation between BMI and FEV₁. (C and D) BMI used as the quantitative variable to assess the relation between BMI and FEV₁% or FVC. *p<0.05 vs normal weight group.

Abbreviations: BMI, body mass index; COPD, chronic obstructive pulmonary disease; FEV₁, forced expiratory volume in the first second; FEV₁%, predicted percentage of FEV₁; FVC, forced vital capacity.