Table 4.

Generalised linear model for baseline drivers of overall costs during the inpatient episode

Variable*	Parameter
	B	Standard Error	95% Confidence Interval	P value
Intercept	10153	0.13	9909–6615	0.00
ASA ≥ 3	0.38	0.09	0.2–0.56	0.00
Low rectal cancer	0.02	0.08	-0.13–0.18	0.79
Stage IV disease	-0.39	0.18	-0.74–0.31	0.03
Robotic approach	0.14	0.09	0.31–2.71	0.1
Restorative resection	-0.04	0.11	-0.22–0.21	0.97
Extended resection	0.44	0.10	0.24–0.64	0.00

ASA American Society of Anaesthesiologists Classification

*Variables with a P value < 0.1 in the simple linear regression analysis were included in the model