Table 2.

Distribution of patients in the single center database (Quality) and the National Surgical Quality Improvement Program.

Patient Characteristics	Quality (n = 1606)	NSQIP (n = 58,790)
	Distribution	Distribution
Age, y	48.6 ± 23.6	57.3 ± 13.1
Sex, women	63.8%	51.8%
Body mass index	25.8 ± 6.8	30.5
Ascites	1.1%	<0.01%
Sepsis	1.0%	1.2%
Disseminated cancer	3.1%	2.0%
Diabetes	5.2%	16.5%
Hypertension	15.1%	50.8%
COPD	2.8%	4.6%
Dialysis	1.2%	0.4%

Abbreviation: COPD, chronic obstructive pulmonary disease.

Note: Data presented as % or mean ± SD.