Table 2.

Operative and lab characteristics.

Characteristic	No UTI		UTI		p value
Total operative time (mins) (mean, SD)	92.63, 37.2		95.21, 45.5		0.128
<130.0	100143	98.9%	1067	1.1%
>130.0	14234	98.8%	172	1.2%
Anesthesia type∗					0.022
General	61043	98.9%	710	1.1%
Spinal	43710	99.0%	452	1.0%
Other (including regional and local)	5776	99.2%	48	0.8%
Creatinine > mean + 1 SD (1.35)∗	6180	98.1%	121	1.9%	<0.001
Platelets < 50	195	99.0%	2	1.0%	0.934
Hematocrit values < 21	184	98.9%	2	1.1%	0.999
INR > 2∗	751	98.2%	14	1.8%	0.047

∗ denotes significance.