Influence of preoperative BMI and weight loss on colorectal cancer surgery - a retrospective cohort study

Interventions: Group 1: After retrospective data collection, a follow-up was performed by means of a single survey on disease status after one year
Primary outcome(s): Determination of the influence of preoperative body mass index and preoperative weight loss on postoperative complications (wound infection; anastomotic leakage; in-hospital mortality).
Study Design: Allocation: ; Masking: ; Control: ; Assignment: ; Study design purpose: treatment