STS NATIONAL CARDIAC SURGERY DATABASE
1996 CAB + AORTIC VALVE REPLACEMENT PATIENTS
UNIVARIATE ANALYSIS: PRE OPERATIVE 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 |
CCS Class II vs. I | 847 | 9.85% | 43/ 847 | 5.08% | 32/ 606 | 5.28% | 0.96 | 0.8630 |
CCS Class III vs. I | 2,683 | 31.22% | 144/ 2,683 | 5.37% | 32/ 606 | 5.28% | 1.02 | 0.9320 |
CCS Class IV vs. I | 1,397 | 16.25% | 142/ 1,397 | 10.16% | 32/ 606 | 5.28% | 1.92 | 0.0004 |
NYHA Class II vs. I | 961 | 11.18% | 42/ 961 | 4.37% | 22/ 448 | 4.91% | 0.89 | 0.6500 |
NYHA Class III vs. I | 3,413 | 39.71% | 204/ 3,413 | 5.98% | 22/ 448 | 4.91% | 1.22 | 0.3660 |
NYHA Class IV vs. I | 1,795 | 20.88% | 187/ 1,795 | 10.42% | 22/ 448 | 4.91% | 2.12 | 0.0003 |
Aortic Valve Disease | 7,033 | 81.83% | 466/ 7,033 | 6.63% | 113/ 1,562 | 7.23% | 0.92 | 0.3855 |
Mitral Valve Disease | 962 | 11.19% | 85/ 962 | 8.84% | 494/ 7,633 | 6.47% | 1.37 | 0.0058 |
Tricuspid Valve Disease | 222 | 2.58% | 17/ 222 | 7.66% | 562/ 8,373 | 6.71% | 1.14 | 0.5790 |
Pulmonic Valve Disease | 45 | 0.52% | 3/ 45 | 6.67% | 576/ 8,550 | 6.74% | 0.99 | 0.9851 |
Reoperation #1 vs. First Op | 926 | 10.77% | 93/ 926 | 10.04% | 476/ 7,597 | 6.27% | 1.60 | 0.0000 |
Multiple Reoperations vs. First Op | 72 | 0.84% | 10/ 72 | 13.89% | 476/ 7,597 | 6.27% | 2.22 | 0.0082 |
Urgent vs. Elective | 1,961 | 22.82% | 158/ 1,961 | 8.06% | 377/ 6,422 | 5.87% | 1.37 | 0.0005 |
Emergent vs. Elective | 177 | 2.06% | 30/ 177 | 16.95% | 377/ 6,422 | 5.87% | 2.89 | 0.0000 |
Emergent/Salvage vs. Elective | 35 | 0.41% | 14/ 35 | 40.00% | 377/ 6,422 | 5.87% | 6.81 | 0.0000 |
Double Vessel Disease vs. Single | 2,509 | 29.19% | 142/ 2,509 | 5.66% | 127/ 2,411 | 5.45% | 1.04 | 0.5450 |
Triple Vessel Disease vs. Single | 3,424 | 39.84% | 278/ 3,424 | 8.12% | 127/ 2,411 | 5.45% | 1.49 | 0.0000 |
Left Main Disease | 1,087 | 12.65% | 95/ 1,087 | 8.74% | 484/ 7,508 | 6.45% | 1.36 | 0.0048 |
Preop IABP | 192 | 2.23% | 33/ 192 | 17.19% | 546/ 8,403 | 6.50% | 2.65 | 0.0000 |
Age 60 - 65 vs. Age < 60 | 975 | 11.34% | 42/ 975 | 4.31% | 22/ 788 | 2.79% | 1.54 | 0.0907 |
Age 66 - 70 vs. Age < 60 | 1,468 | 17.08% | 86/ 1,468 | 5.86% | 22/ 788 | 2.79% | 2.10 | 0.0011 |
Age 71 - 80 vs. Age < 60 | 4,047 | 47.09% | 294/ 4,047 | 7.26% | 22/ 788 | 2.79% | 2.60 | 0.0000 |
Age > 80 vs. Age < 60 | 1,317 | 15.32% | 135/ 1,317 | 10.25% | 22/ 788 | 2.79% | 3.67 | 0.0000 |
E.F. 45% - 54% vs. E.F. >=55% | 1,656 | 19.27% | 95/ 1,656 | 5.74% | 149/ 2,706 | 5.51% | 1.04 | 0.7479 |
E.F. 35% - 44% vs. E.F. >=55% | 1,169 | 13.60% | 90/ 1,169 | 7.70% | 149/ 2,706 | 5.51% | 1.40 | 0.0092 |
E.F. 25% - 34% vs. E.F. >=55% | 705 | 8.20% | 80/ 705 | 11.35% | 149/ 2,706 | 5.51% | 2.06 | 0.0000 |
E.F.< 25% vs. E.F. >=55% | 265 | 3.08% | 21/ 265 | 7.92% | 149/ 2,706 | 5.51% | 1.44 | 0.1058 |
E.F. Unknown vs. E.F. >=55% | 2,094 | 24.36% | 144/ 2,094 | 6.88% | 149/ 2,706 | 5.51% | 1.25 | 0.0492 |
LVEDP <15 | 1,081 | 12.58% | 65/ 1,081 | 6.01% | 181/ 2,452 | 7.38% | 0.81 | 0.1410 |
LVEDP >=15 | 2,452 | 28.53% | 181/ 2,452 | 7.38% | 65/ 1,081 | 6.01% | 1.23 | 0.1410 |
PA Sys <30 | 1,177 | 13.69% | 61/ 1,177 | 5.18% | 253/ 3,311 | 7.64% | 0.68 | 0.0045 |
PA Sys >=30 | 3,311 | 38.52% | 253/ 3,311 | 7.64% | 61/ 1,177 | 5.18% | 1.47 | 0.0045 |
PA Diast <15 | 1,777 | 20.67% | 96/ 1,777 | 5.40% | 209/ 2,582 | 8.09% | 0.67 | 0.0006 |
PA Diast >=15 | 2,582 | 30.04% | 209/ 2,582 | 8.09% | 96/ 1,777 | 5.40% | 1.50 | 0.0006 |
PA Wedge <15 | 1,839 | 21.40% | 105/ 1,839 | 5.71% | 167/ 2,104 | 7.94% | 0.72 | 0.0059 |
PA Wedge >=15 | 2,104 | 24.48% | 167/ 2,104 | 7.94% | 105/ 1,839 | 5.71% | 1.39 | 0.0059 |