Does overweight affect outcomes in patients undergoing gastrectomy for cancer? A meta-analysis of 25 cohort studies.

Objective: Overweight was regarded as one of the risk factors for poor outcome after gastrectomy, but its influence on the surgical and postoperative outcomes of gastrectomy was unclear.

Methods: Comprehensive searches were conducted to include cohort studies which evaluated the influence of overweight on the surgical and postoperative outcomes of gastrectomy. Data was analyzed by RevMan 5.