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. Author manuscript; available in PMC: 2014 Feb 1.
Published in final edited form as: J Vasc Surg. 2012 Nov 15;57(2):318–326. doi: 10.1016/j.jvs.2012.08.116

Table I.

Preoperative characteristics for the 2005-2010 National Surgical Quality Improvement Program (NSQIP) dataset

Category Preoperative variable N (%)
Cardiac Angina within 1 month Yes 381 (2.2)
Cardiac surgery prior Yes 4279 (24.2)
Congestive heart failure Yes 120 (0.7)
Myocardial infarction (within 6 months) Yes 218 (1.2)
Percutaneous coronary intervention prior Yes 3481 (19.7)
Circulatory Bleeding disorder Yes 2497 (14.1)
Previous peripheral arterial revascularization or amputation Yes 1720 (9.7)
Rest pain in lower extremity Yes 121 (0.7)
General Age, years <60 1896 (10.7)
60-69 5465 (30.9)
70-79 6808 (38.5)
≥80 3523 (19.9)
American Society of Anesthesiologists class 1 439 (2.5)
2 4641 (26.3)
3 11,238 (63.6)
4 1362 (7.7)
5 3 (0.02)
Body mass index, median (interquartile range), kg/m2 28.5 (25.4-32.3)
Corticosteroid use (chronic) Yes 319 (1.8)
Diabetes mellitus On insulin 2844 (16.1)
On medication 1934 (10.9)
Functional status Dependent 290 (1.6)
Hypertension Yes 15,144 (85.6)
Race American Indian 44 (0.3)
Asian/Pacific Islander 176 (1.0)
Black 580 (3.3)
Hispanic 506 (2.9)
Unknown 1037 (5.9)
White 15,162 (86.6)
Sex Male 10,217 (57.9)
Female 7437 (42.1)
Systemic inflammatory response syndrome Yes 78 (0.5)
Transition (admitted from:) Home 17,520 (99.0)
Acute care 89 (0.5)
VA acute care 1 (0.01)
Chronic care 55 (0.3)
VA chronic care 0
Others 27 (0.2)
Weight loss >10% within 6 months Yes 71 (0.4)
Laboratory Albumin Abnormal 914 (5.2)
Alkaline phosphatase Abnormal 544 (3.1)
Blood urea nitrogen Abnormal 7310 (41.3)
Creatinine Abnormal 2197 (12.4)
Hematocrit Abnormal 3379 (19.1)
Platelets Abnormal 2360 (13.3)
Prothrombin time Abnormal 3311 (18.7)
Partial thromboplastin time Abnormal 1081 (6.1)
Serum glutamic oxaloacetic transaminase Abnormal 922 (5.2)
Sodium Abnormal 1950 (11.0)
White blood cell count Abnormal 1700 (9.6)
Renal Dialysis (preoperative) Yes 143 (0.8)
Respiratory COPD Yes 1755 (9.9)
Dyspnea At rest or moderate exertion 3310 (18.7)
Pneumonia (preoperative) Yes 14 (0.1)
Social Alcohol intake within last 2 weeks Yes 746 (4.2)
Smoking within past year Yes 4588 (25.9)
Therapy Anesthesia General 14,649 (82.8)
Regional 3040 (17.2)

COPD, Chronic obstructive pulmonary disease; VA, Veterans Affairs.