STS NATIONAL CARDIAC SURGERY DATABASE
1996 CAB + MITRAL VALVE REPAIR PATIENTS
UNIVARIATE ANALYSIS: PRE OPERATIVE RISK VARIABLES
PATIENT POPULATION: 1,529
OPERATIVE SURVIVORS: 1,393
OPERATIVE MORTALITIES: 136
RISK VARIABLE | Count | % of Pop. | Mortality w/Variable Present |
| Mortality w/Variable Absent |
| Relative Risk | c 2 p-Value |
CCS Class II vs. I | 136 | 8.89% | 5/136 | 3.68% | 4/120 | 3.33% | 1.11 | 0.8820 |
CCS Class III vs. I | 402 | 26.29% | 25/402 | 6.22% | 4/120 | 3.33% | 1.87 | 0.2260 |
CCS Class IV vs. I | 407 | 26.62% | 63/407 | 15.48% | 4/120 | 3.33% | 4.65 | 0.0004 |
NYHA Class II vs. I | 152 | 9.94% | 7/152 | 4.61% | 3/76 | 3.95% | 1.17 | 0.8190 |
NYHA Class III vs. I | 561 | 36.69% | 36/561 | 6.42% | 3/76 | 3.95% | 1.63 | 0.3990 |
NYHA Class IV vs. I | 446 | 29.17% | 66/446 | 14.80% | 3/76 | 3.95% | 3.75 | 0.0100 |
Aortic Valve Disease | 102 | 6.67% | 11/102 | 10.78% | 125/1,427 | 8.76% | 1.23 | 0.4877 |
Mitral Valve Disease | 1,176 | 76.91% | 104/1,176 | 8.84% | 32/353 | 9.07% | 0.98 | 0.8979 |
Tricuspid Valve Disease | 72 | 4.71% | 3/72 | 4.17% | 133/1,457 | 9.13% | 0.46 | 0.1488 |
Pulmonic Valve Disease | 16 | 1.05% | 1/16 | 6.25% | 135/1,513 | 8.92% | 0.70 | 0.7087 |
Reoperation #1 vs. First Op | 142 | 9.29% | 23/142 | 16.20% | 113/1,377 | 8.21% | 1.97 | 0.0015 |
Multiple Reoperations vs. First Op | 10 | 0.65% | 0/10 | 0.00% | 113/1,377 | 8.21% | 0.00 | 0.3446 |
Urgent vs. Elective | 416 | 27.21% | 47/416 | 11.30% | 66/1,027 | 6.43% | 1.76 | 0.0018 |
Emergent vs. Elective | 74 | 4.84% | 19/74 | 25.68% | 66/1,027 | 6.43% | 4.00 | 0.0000 |
Emergent/Salvage vs. Elective | 12 | 0.78% | 4/12 | 33.33% | 66/1,027 | 6.43% | 5.19 | 0.0002 |
Double Vessel Disease vs. Single | 355 | 23.22% | 26/355 | 7.32% | 8/237 | 3.38% | 2.17 | 0.0430 |
Triple Vessel Disease vs. Single | 905 | 59.19% | 102/905 | 11.27% | 8/237 | 3.38% | 3.33 | 0.0002 |
Left Main Disease | 236 | 15.43% | 30/236 | 12.71% | 106/1,293 | 8.20% | 1.55 | 0.0251 |
Preop IABP | 180 | 11.77% | 44/180 | 24.44% | 92/1,349 | 6.82% | 3.58 | 0.0000 |
Age 60 - 65 vs. Age < 60 | 244 | 15.96% | 15/244 | 6.15% | 8/247 | 3.24% | 1.90 | 0.1272 |
Age 66 - 70 vs. Age < 60 | 317 | 20.73% | 23/317 | 7.26% | 8/247 | 3.24% | 2.24 | 0.0378 |
Age 71 - 80 vs. Age < 60 | 612 | 40.03% | 72/612 | 11.76% | 8/247 | 3.24% | 3.63 | 0.0001 |
Age > 80 vs. Age < 60 | 109 | 7.13% | 18/109 | 16.51% | 8/247 | 3.24% | 5.10 | 0.0000 |
E.F. 45% - 54% vs. E.F. >=55% | 279 | 18.25% | 19/279 | 6.81% | 20/345 | 5.80% | 1.17 | 0.6033 |
E.F. 35% - 44% vs. E.F. >=55% | 287 | 18.77% | 30/287 | 10.45% | 20/345 | 5.80% | 1.80 | 0.0308 |
E.F. 25% - 34% vs. E.F. >=55% | 273 | 17.85% | 29/273 | 10.62% | 20/345 | 5.80% | 1.83 | 0.0275 |
E.F.< 25% vs. E.F. >=55% | 124 | 8.11% | 16/124 | 12.90% | 20/345 | 5.80% | 2.23 | 0.0108 |
E.F. Unknown vs. E.F. >=55% | 221 | 14.45% | 22/221 | 9.95% | 20/345 | 5.80% | 1.72 | 0.0656 |
LVEDP <15 | 173 | 11.31% | 7/173 | 4.05% | 54/561 | 9.63% | 0.42 | 0.0200 |
LVEDP >=15 | 561 | 36.69% | 54/561 | 9.63% | 7/173 | 4.05% | 2.38 | 0.0200 |
PA Sys <30 | 109 | 7.13% | 4/109 | 3.67% | 44/585 | 7.52% | 0.49 | 0.1460 |
PA Sys >=30 | 585 | 38.26% | 44/585 | 7.52% | 4/109 | 3.67% | 2.05 | 0.1460 |
PA Diast <15 | 169 | 11.05% | 7/169 | 4.14% | 39/496 | 7.86% | 0.53 | 0.1000 |
PA Diast >=15 | 496 | 32.44% | 39/496 | 7.86% | 7/169 | 4.14% | 1.90 | 0.1000 |
PA Wedge <15 | 156 | 10.20% | 9/156 | 5.77% | 34/444 | 7.66% | 0.75 | 0.4320 |
PA Wedge >=15 | 444 | 29.04% | 34/444 | 7.66% | 9/156 | 5.77% | 1.33 | 0.4320 |