STS NATIONAL CARDIAC SURGERY DATABASE
1996 CAB + AORTIC VALVE REPLACEMENT PATIENTS
UNIVARIATE ANALYSIS: PREOPERATIVE RISK VARIABLES
PATIENT POPULATION: 8,595
OPERATIVE SURVIVORS: 8,016
OPERATIVE MORTALITIES: 579
RISK VARIABLE | Count | % of Pop. | Mortality w/ Variable Present |
| Mortality w/Variable Absent |
| Relative Risk | c 2 p-Value |
Male | 5,808 | 67.57% | 334/ 5,808 | 5.75% | 245/ 2,787 | 8.79% | 0.65 | 0.0000 |
Female | 2,787 | 32.43% | 245/ 2,787 | 8.79% | 334/ 5,808 | 5.75% | 1.53 | 0.0000 |
Caucasian | 7,739 | 90.04% | 516/ 7,739 | 6.67% | 63/ 856 | 7.36% | 0.91 | 0.4432 |
Non-Caucasian | 856 | 9.96% | 63/ 856 | 7.36% | 516/ 7,739 | 6.67% | 1.10 | 0.4432 |
Smoking History | 4,399 | 51.18% | 271/ 4,399 | 6.16% | 308/ 4,196 | 7.34% | 0.84 | 0.0292 |
Family History | 2,947 | 34.29% | 177/ 2,947 | 6.01% | 402/ 5,648 | 7.12% | 0.84 | 0.0510 |
Diabetes | 2,258 | 26.27% | 206/ 2,258 | 9.12% | 373/ 6,337 | 5.89% | 1.55 | 0.0000 |
Morbid Obesity | 791 | 9.20% | 57/ 791 | 7.21% | 522/ 7,804 | 6.69% | 1.08 | 0.5803 |
Hypercholesterolemia | 3,252 | 37.84% | 180/ 3,252 | 5.54% | 399/ 5,343 | 7.47% | 0.74 | 0.0005 |
Renal Failure | 524 | 6.10% | 91/ 524 | 17.37% | 488/ 8,071 | 6.05% | 2.87 | 0.0000 |
Renal Failure Requiring Dialysis | 123 | 1.43% | 26/ 123 | 21.14% | 553/ 8,472 | 6.53% | 3.24 | 0.0000 |
Hypertension | 5,309 | 61.77% | 377/ 5,309 | 7.10% | 202/ 3,286 | 6.15% | 1.16 | 0.0864 |
Pulmonary Hypertension | 1,184 | 13.78% | 129/ 1,184 | 10.90% | 450/ 7,411 | 6.07% | 1.79 | 0.0000 |
CVA | 672 | 7.82% | 60/ 672 | 8.93% | 519/ 7,923 | 6.55% | 1.36 | 0.0182 |
Endocarditis | 123 | 1.43% | 16/ 123 | 13.01% | 563/ 8,472 | 6.65% | 1.96 | 0.0052 |
Cardiomegaly | 1,723 | 20.05% | 141/ 1,723 | 8.18% | 438/ 6,872 | 6.37% | 1.28 | 0.0074 |
COPD | 1,579 | 18.37% | 140/ 1,579 | 8.87% | 439/ 7,016 | 6.26% | 1.42 | 0.0002 |
Immunosuppressive Rx | 164 | 1.91% | 19/ 164 | 11.59% | 560/ 8,431 | 6.64% | 1.74 | 0.0124 |
Peripheral Vascular Disease | 45 | 0.52% | 3/ 45 | 6.67% | 576/ 8,550 | 6.74% | 0.99 | 0.9851 |
Cerebrovascular Disease | 1,032 | 12.01% | 97/ 1,032 | 9.40% | 482/ 7,563 | 6.37% | 1.47 | 0.0003 |
Prior CAB | 809 | 9.41% | 89/ 809 | 11.00% | 490/ 7,786 | 6.29% | 1.75 | 0.0000 |
Prior Valve | 325 | 3.78% | 22/ 325 | 6.77% | 557/ 8,270 | 6.74% | 1.01 | 0.9808 |
Prior Other Cardiac | 223 | 2.59% | 18/ 223 | 8.07% | 561/ 8,372 | 6.70% | 1.20 | 0.4202 |
Prior Non-Cardiac | 625 | 7.27% | 58/ 625 | 9.28% | 521/ 7,970 | 6.54% | 1.42 | 0.0084 |
Prior Non-Surgical | 851 | 9.90% | 64/ 851 | 7.52% | 515/ 7,744 | 6.65% | 1.13 | 0.3364 |
PTCA To OR <6Hrs | 8 | 0.09% | 1/ 8 | 12.50% | 578/ 8,587 | 6.73% | 1.86 | 0.5153 |
PTCA To OR >6Hrs | 286 | 3.33% | 24/ 286 | 8.39% | 555/ 8,309 | 6.68% | 1.26 | 0.2561 |
Pior MI <6 Hrs vs. No MI | 19 | 0.22% | 3/ 19 | 15.79% | 404/ 6,634 | 6.09% | 2.59 | 0.0781 |
Prior MI 6 to 24 Hrs vs. No MI | 32 | 0.37% | 8/ 32 | 25.00% | 404/ 6,634 | 6.09% | 4.11 | 0.0000 |
Prior MI 1-7 Days vs. No MI | 340 | 3.96% | 37/ 340 | 10.88% | 404/ 6,634 | 6.09% | 1.79 | 0.0004 |
Prior MI 7-21 Days vs. No MI | 212 | 2.47% | 15/ 212 | 7.08% | 404/ 6,634 | 6.09% | 1.16 | 0.5556 |
Prior MI >21 Days vs. No MI | 1,358 | 15.80% | 112/ 1,358 | 8.25% | 404/ 6,634 | 6.09% | 1.35 | 0.0032 |
Congestive Heart Failure | 3,488 | 40.58% | 295/ 3,488 | 8.46% | 284/ 5,107 | 5.56% | 1.52 | 0.0000 |
Unstable Angina | 2,426 | 28.23% | 191/ 2,426 | 7.87% | 388/ 6,169 | 6.29% | 1.25 | 0.0084 |
Cardiogenic Shock | 102 | 1.19% | 27/ 102 | 26.47% | 552/ 8,493 | 6.50% | 4.07 | 0.0000 |
Resuscitation | 53 | 0.62% | 6/ 53 | 11.32% | 573/ 8,542 | 6.71% | 1.69 | 0.1817 |
Arrhythmia | 1,640 | 19.08% | 146/ 1,640 | 8.90% | 433/ 6,955 | 6.23% | 1.43 | 0.0001 |
Digitalis | 2,027 | 23.58% | 191/ 2,027 | 9.42% | 388/ 6,568 | 5.91% | 1.60 | 0.0000 |
Beta Blockers | 2,123 | 24.70% | 130/ 2,123 | 6.12% | 449/ 6,472 | 6.94% | 0.88 | 0.1940 |
Ca Antagonists | 2,527 | 29.40% | 172/ 2,527 | 6.81% | 407/ 6,068 | 6.71% | 1.01 | 0.8673 |
ACE Inhibitors | 2,116 | 24.62% | 159/ 2,116 | 7.51% | 420/ 6,479 | 6.48% | 1.16 | 0.1002 |
Nitrates - P.O. | 2,412 | 28.06% | 189/ 2,412 | 7.84% | 390/ 6,183 | 6.31% | 1.24 | 0.0111 |
Nitrates - I.V. | 797 | 9.27% | 71/ 797 | 8.91% | 508/ 7,798 | 6.51% | 1.37 | 0.0102 |
Antiarrhythmics | 417 | 4.85% | 43/ 417 | 10.31% | 536/ 8,178 | 6.55% | 1.57 | 0.0028 |
Antiplatelets | 2,777 | 32.31% | 202/ 2,777 | 7.27% | 377/ 5,818 | 6.48% | 1.12 | 0.1695 |
Anticoagulants | 1,791 | 20.84% | 165/ 1,791 | 9.21% | 414/ 6,804 | 6.08% | 1.51 | 0.0000 |
Diuretics | 3,378 | 39.30% | 307/ 3,378 | 9.09% | 272/ 5,217 | 5.21% | 1.74 | 0.0000 |
Inotropes | 221 | 2.57% | 41/ 221 | 18.55% | 538/ 8,374 | 6.42% | 2.89 | 0.0000 |
Steroids | 333 | 3.87% | 42/ 333 | 12.61% | 537/ 8,262 | 6.50% | 1.94 | 0.0000 |
Aspirin | 3,979 | 46.29% | 271/ 3,979 | 6.81% | 308/ 4,616 | 6.67% | 1.02 | 0.7987 |