Table 1.

Demographic and clinical characteristics of 30-day postoperative superficial SSI after hysterectomy (N =13,822)

Variable	Cellulitis (n= 221)	No Cellulitis (n= 13,601)	P
Age category			1.0
< 80 years old	218 (98.6)	13,378 (98.4)
≥ 80 years old	3 (1.4)	223 (1.6)
Race			.49
White	129 (58.4)	8,265 (60.8)
Ethnicity			.14
Hispanic	27 (12.2)	2,180 (16.0)
Diabetes mellitus	41 (18.6)	982 (7.2)	<.001
History of CVA with neurologic deficit	1 (0.5)	65 (0.5)	1.0
Current smoker	51 (23.1)	2,671 (19.6)	.20
BMI category			<.001
< 30 kg/m2	78 (35.3)	7,598 (55.9)
≥ 30 and < 40 kg/m2	74 (33.5)	4,564 (33.6)
≥ 40 kg/m2	69 (31.2)	1,439 (10.6)
Ascites	6 (2.7)	104 (0.8)	<.01
Unintentional weight lossa	4 (1.8)	62 (0.5)	.02
Functional status (dependent for ADLs)	2 (0.9)	97 (0.7)	.67
Hysterectomy for gynecologic cancer	32 (14.5)	871 (6.4)	<.001
Preoperative anemia (Hct < 36%)	48 (22.3)	2,976 (22.8)	.94
Preoperative Creatinine > 1.5 mg/dL	3 (1.8)	75 (0.9)	.18
ASA Class 3 or higher	93 (42.1)	2,521 (18.5)	<.001
Intraoperative blood transfusion	15 (6.8)	329 (2.4)	<.001
Work Relative Value Unit (mean, ±SD)	18.7 (±5.1)	17.3 (±3.8)	<.001
Operative time  > 75th percentile duration	93 (42.1)	3,378 (24.8)	<.001
Type of anesthesia (general)	221 (100.0)	13,111 (96.4)	.001
Wound class			.06
1-Clean	0	33 (0.2)
2-Clean/contaminated	215 (97.3)	13,443 (98.8)
3-contaiminated	5 (2.3)	92 (0.7)
4-dirty	1 (0.5)	33 (0.2)

All values listed as n (%) unless otherwise specified

^aLoss of 10% or more of body weight in the previous 6 months not due to exercise or dieting. SSI = surgical site infection; CVA = cerebrovascular accident; BMI= body mass index; SD = standard deviation; ADL = activities of daily living; Hct= hematocrit; ASA = American Society of Anesthesiologists