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Clinical outcomes in low skeletal muscle mass patients after propensity score matching. After propensity score matching, the mean hospital (69.6 vs. 37.2 days, P<0.001) and ICU length-of-stay (22.9 vs. 16.5 days, P=0.013) were longer in the rehabilitation group. However, hospital mortality (26.5% vs. 40.3%, P=0.005) and 6-month mortality (40.9% vs. 51.4%, P=0.045) were lower in the rehabilitation group. *, P<0.05; **, P<0.01; ***, P<0.001.
