STS NATIONAL CARDIAC SURGERY DATABASE
1996 ALL OTHER PROCEDURES
UNIVARIATE ANALYSIS: PREOPERATIVE RISK VARIABLES
PATIENT POPULATION: 23,877
OPERATIVE SURVIVORS: 21,699
OPERATIVE MORTALITIES: 2,178
RISK VARIABLE | Count | % of Pop. | Mortality w/Variable Present |
| Mortality w/Variable Absent |
| Relative Risk | c 2 p-Value |
Male | 14,432 | 60.44% | 1,181/14,432 | 8.18% | 997/9,445 | 10.56% | 0.78 | 0.0000 |
Female | 9,445 | 39.56% | 997/9,445 | 10.56% | 1,181/14,432 | 8.18% | 1.29 | 0.0000 |
Caucasian | 20,330 | 85.14% | 1,835/20,330 | 9.03% | 343/3,547 | 9.67% | 0.93 | 0.2189 |
Non-Caucasian | 3,547 | 14.86% | 343/3,547 | 9.67% | 1,835/20,330 | 9.03% | 1.07 | 0.2189 |
Smoking History | 11,818 | 49.50% | 1,044/11,818 | 8.83% | 1,134/12,059 | 9.40% | 0.94 | 0.1263 |
Family History | 7,277 | 30.48% | 614/7,277 | 8.44% | 1,564/16,600 | 9.42% | 0.90 | 0.0150 |
Diabetes | 4,591 | 19.23% | 487/4,591 | 10.61% | 1,691/19,286 | 8.77% | 1.21 | 0.0001 |
Morbid Obesity | 2,176 | 9.11% | 232/2,176 | 10.66% | 1,946/21,701 | 8.97% | 1.19 | 0.0089 |
Hypercholesterolemia | 7,367 | 30.85% | 614/7,367 | 8.33% | 1,564/16,510 | 9.47% | 0.88 | 0.0048 |
Renal Failure | 1,470 | 6.16% | 325/1,470 | 22.11% | 1,853/22,407 | 8.27% | 2.67 | 0.0000 |
Renal Failure Requiring Dialysis | 335 | 1.40% | 81/335 | 24.18% | 2,097/23,542 | 8.91% | 2.71 | 0.0000 |
Hypertension | 12,512 | 52.40% | 1,278/12,512 | 10.21% | 900/11,365 | 7.92% | 1.29 | 0.0000 |
Pulmonary Hypertension | 2,973 | 12.45% | 405/2,973 | 13.62% | 1,773/20,904 | 8.48% | 1.61 | 0.0000 |
CVA | 2,086 | 8.74% | 240/2,086 | 11.51% | 1,938/21,791 | 8.89% | 1.29 | 0.0001 |
Endocarditis | 1,321 | 5.53% | 105/1,321 | 7.95% | 2,073/22,556 | 9.19% | 0.86 | 0.1276 |
Cardiomegaly | 4,052 | 16.97% | 489/4,052 | 12.07% | 1,689/19,825 | 8.52% | 1.42 | 0.0000 |
COPD | 3,841 | 16.09% | 463/3,841 | 12.05% | 1,715/20,036 | 8.56% | 1.41 | 0.0000 |
Immunosuppressive Rx | 476 | 1.99% | 78/476 | 16.39% | 2,100/23,401 | 8.97% | 1.83 | 0.0000 |
Peripheral Vascular Disease | 173 | 0.72% | 18/173 | 10.40% | 2,160/23,704 | 9.11% | 1.14 | 0.5564 |
Cerebrovascular Disease | 3,252 | 13.62% | 312/3,252 | 9.59% | 1,866/20,625 | 9.05% | 1.06 | 0.3141 |
Prior CAB | 2,660 | 11.14% | 364/2,660 | 13.68% | 1,814/21,217 | 8.55% | 1.60 | 0.0000 |
Prior Valve | 1,889 | 7.91% | 196/1,889 | 10.38% | 1,982/21,988 | 9.01% | 1.15 | 0.0485 |
Prior Other Cardiac | 1,579 | 6.61% | 144/1,579 | 9.12% | 2,034/22,298 | 9.12% | 1.00 | 0.9977 |
Prior Non-Cardiac | 2,633 | 11.03% | 242/2,633 | 9.19% | 1,936/21,244 | 9.11% | 1.01 | 0.8958 |
Prior Non-Surgical | 3,192 | 13.37% | 296/3,192 | 9.27% | 1,882/20,685 | 9.10% | 1.02 | 0.7495 |
PTCA To OR <6Hrs | 398 | 1.67% | 66/398 | 16.58% | 2,112/23,479 | 9.00% | 1.84 | 0.0000 |
PTCA To OR >6Hrs | 881 | 3.69% | 85/881 | 9.65% | 2,093/22,996 | 9.10% | 1.06 | 0.5803 |
Pior MI <6 Hrs vs. No MI | 434 | 1.82% | 98/434 | 22.58% | 1,322/17,058 | 7.75% | 2.91 | 0.0000 |
Prior MI 6 to 24 Hrs vs. No MI | 412 | 1.73% | 92/412 | 22.33% | 1,322/17,058 | 7.75% | 2.88 | 0.0000 |
Prior MI 1-7 Days vs. No MI | 1,597 | 6.69% | 262/1,597 | 16.41% | 1,322/17,058 | 7.75% | 2.12 | 0.0000 |
Prior MI 7-21 Days vs. No MI | 635 | 2.66% | 59/635 | 9.29% | 1,322/17,058 | 7.75% | 1.20 | 0.1551 |
Prior MI >21 Days vs. No MI | 3,741 | 15.67% | 345/3,741 | 9.22% | 1,322/17,058 | 7.75% | 1.19 | 0.0027 |
Congestive Heart Failure | 6,897 | 28.89% | 904/6,897 | 13.11% | 1,274/16,980 | 7.50% | 1.75 | 0.0000 |
Unstable Angina | 6,198 | 25.96% | 719/6,198 | 11.60% | 1,459/17,679 | 8.25% | 1.41 | 0.0000 |
Cardiogenic Shock | 1,070 | 4.48% | 410/1,070 | 38.32% | 1,768/22,807 | 7.75% | 4.94 | 0.0000 |
Resuscitation | 567 | 2.37% | 180/567 | 31.75% | 1,998/23,310 | 8.57% | 3.70 | 0.0000 |
Arrhythmia | 5,657 | 23.69% | 644/5,657 | 11.38% | 1,534/18,220 | 8.42% | 1.35 | 0.0000 |
Digitalis | 5,071 | 21.24% | 542/5,071 | 10.69% | 1,636/18,806 | 8.70% | 1.23 | 0.0000 |
Beta Blockers | 6,281 | 26.31% | 619/6,281 | 9.86% | 1,559/17,596 | 8.86% | 1.11 | 0.0187 |
Ca Antagonists | 5,475 | 22.93% | 500/5,475 | 9.13% | 1,678/18,402 | 9.12% | 1.00 | 0.9751 |
ACE Inhibitors | 5,622 | 23.55% | 494/5,622 | 8.79% | 1,684/18,255 | 9.22% | 0.95 | 0.3186 |
Nitrates - P.O. | 4,881 | 20.44% | 457/4,881 | 9.36% | 1,721/18,996 | 9.06% | 1.03 | 0.5119 |
Nitrates - I.V. | 3,024 | 12.66% | 444/3,024 | 14.68% | 1,734/20,853 | 8.32% | 1.77 | 0.0000 |
Antiarrhythmics | 1,837 | 7.69% | 230/1,837 | 12.52% | 1,948/22,040 | 8.84% | 1.42 | 0.0000 |
Antiplatelets | 6,210 | 26.01% | 584/6,210 | 9.40% | 1,594/17,667 | 9.02% | 1.04 | 0.3688 |
Anticoagulants | 7,094 | 29.71% | 789/7,094 | 11.12% | 1,389/16,783 | 8.28% | 1.34 | 0.0000 |
Diuretics | 7,414 | 31.05% | 835/7,414 | 11.26% | 1,343/16,463 | 8.16% | 1.38 | 0.0000 |
Inotropes | 1,408 | 5.90% | 393/1,408 | 27.91% | 1,785/22,469 | 7.94% | 3.51 | 0.0000 |
Steroids | 839 | 3.51% | 114/839 | 13.59% | 2,064/23,038 | 8.96% | 1.52 | 0.0000 |
Aspirin | 8,961 | 37.53% | 802/8,961 | 8.95% | 1,376/14,916 | 9.22% | 0.97 | 0.4747 |