Preoperative exercise and recovery after cardiac surgery: a meta-analysis

Figures

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  Fig. 1. The flow diagram of the study selection

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  Fig. 2. Assessment of the quality of the included studies: low risk of bias (green hexagons), unclear risk of bias (yellow hexagons), and high risk of bias (red hexagons)

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  Fig. 3. Quality assessment of the included studies

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  Fig. 4. Forest plots of length of stay in the ICU

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  Fig. 5. Forest plots of postoperative abnormal WBC at postoperative day 7

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  Fig. 6. Forest plots of postoperative physical function

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  Fig. 7. Forest plots of postoperative mental health

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  Fig. 8. a Sensitivity analysis forest plots about length of stay in ICU excluding apparent outlier study (Chen et al. [13]) b Funnel plot of publication bias