Table 3. Univariate analysis of postoperative outcomes between two groups.

Variables	Elective (n=125,293)	Non-elective (n=4,968)	P value
Operative time (minutes)	93±37	103±49	<0.001
Length-of-stay (days)	3±3	6±8	<0.001
Discharged home	97,842 (78%)	2,166 (44%)	<0.001
Discharged to skilled nursing facility	17,514 (14%)	1,602 (32%)	<0.001
Superficial surgical site infections (SSI)	818 (0.7%)	44 (0.9%)	0.047
Deep SSI	341 (0.3%)	32 (0.6%)	0.099
Organ/space SSI	310 (0.2%)	25 (0.5%)	<0.001
Wound dehiscence	119 (0.1%)	10 (0.2%)	0.019
Pneumonia	402 (0.3%)	103 (2.1%)	<0.001
Reintubation	206 (0.2%)	51 (1.0%)	<0.001
Pulmonary embolism	307 (0.2%)	44 (0.9%)	<0.001
Ventilator required >48 h	87 (0.1%)	25 (0.5%)	<0.001
Renal insufficiency	117 (0.1%)	12 (0.2%)	0.001
Acute renal failure	67 (0.1%)	9 (0.2%)	<0.001
Urinary tract infection	1,156 (0.9%)	154 (3.1%)	<0.001
Stroke/cerebrovascular accident	107 (0.1%)	12 (0.2%)	<0.001
Cardiac arrest	91 (0.1%)	23 (0.5%)	<0.001
Myocardial infarction	304 (0.2%)	33 (0.7%)	<0.001
Bleeding requiring transfusion	17,717 (14.1%)	1,161 (23.4%)	<0.001
Deep vein thrombosis (DVT)	483 (0.4%)	48 (1.0%)	<0.001
Sepsis	319 (0.3%)	47 (0.9%)	<0.001
Septic shock	70 (0.1%)	19 (0.4%)	<0.001
Reoperation	13 (<0.1%)	4 (0.1%)	<0.001
Readmission	3,559 (2.8%)	263 (5.3%)	<0.001