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. 2020 Feb 19;15:389–395. doi: 10.2147/COPD.S234363

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© 2020 Li et al.

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Line of positive correlation between BODE quartiles and Charlson comorbidity index (p < 0.001).

Notes: Post hoc comparison with Scheffé’s method for significant difference between BODE quartile 1 and quartile 4 (p = 0.024).