Systematic review and meta-analysis of frailty as a predictor of morbidity and mortality after major abdominal surgery

Frailty is associated with poor prognosis, but the multitude of definitions and scales of assessment makes the impact on outcomes difficult to assess. The aim of this study was to quantify the effect of frailty on postoperative morbidity and mortality, and long-term mortality after major abdominal surgery, and to evaluate the performance of different frailty metrics.An extended literature search was performed to retrieve all original articles...