(a) Multivariable analysis for complications (Group 1 vs. Groups 2–5) in a model including type of resection, age, gender, malignant vs. benign pathology, and ASA score. The vertical bars indicate the confidence interval, while the horizontal marks indicate the odds ratio. (b) Multivariable analysis for length of stay (Group 1 vs. Groups 2–5) in a model including type of resection, age, gender, malignant vs. benign pathology, and ASA score. The vertical bars indicate the confidence interval, while the horizontal marks indicate the odds ratio. *p < 0.05