Influence of the severity of postoperative complications after major visceral surgery on the length of hospital stay

Interventions: Group 1: For patients with elective interventions, which fall under the interventions defined by us, the length of stay in hospital and the degree of complication are recorded on the basis of their patient files.
Primary outcome(s): length of stay in hospital
Study Design: Allocation: ; Masking: ; Control: ; Assignment: ; Study design purpose: other

干预措施：第1组：针对纳入本研究定义的干预范畴的择期干预患者，基于其病历档案记录其住院时长与并发症严重程度。
主要结局指标：住院时长
研究设计：分配方案：；盲法设置：；对照设计：；分组分配：；研究设计目的：其他