Effects of exercise-based pulmonary rehabilitation on severe/very severe COPD: a systematic review and meta-analysis

Figures

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  Figure 1.. Study flow diagram for this review.

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  Figure 2.. (a) Risk of bias summary. (b) Risk of bias graph. +, low risk; −, high risk; ?, uncertain risk.

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  Figure 3.. Forest plot of 6MWD.

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  Figure 4.. Forest plot of SGRQ scores.

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  Figure 5.. Forest plot of Borg scale scores.