Effect of weight-loss diets prior to elective surgery on postoperative outcomes in obesity: A systematic review and meta-analysis.

The pooled effect estimate suggested that LOS was shorter in the intervention group, but the difference did not reach statistical significance: MD −3.72 h (95% CI −10.76 to 3.72; p = 0.30) ( I 2 = 0%, p = 0.99) (Figure 3D ). 3.4.4 Patient‐reported outcome measures Two studies collected patient‐reported outcome measures (PROMs).

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