Table I. Preoperative patient-related and intraoperative factors and effect on LOS.

	Mean	Range	Effect on LOS
Preoperative serum albumin*	3.8 g/dl	1.7–4.6 g/dl	lower albumin increased LOS
Preoperative bilirubin	0.95 mg/dl	0.2–8.4 mg/dl	no effect
Preoperative creatinine*†	0.9 mg/dl	0.4–3.6 mg/dl	higher creatinine increased LOS
ASA score*†	2.3	1–4	higher ASA increased LOS
Intraoperative blood transfusion	2.8 units	0–18 units	no effect
Operative time*	276 min	80–555 min	longer operative time increased LOS
Intraoperative hypotension (SBP <90) per patient	0.3 episodes	0–8 episodes	no effect
Epidural use*	67.7% of cases		no epidural increased LOS

*p<0.05.

†strongest predictors of LOS.