Table 3:
30-day Outcomes Stratified by Presence of Single Risk Factor
| Variable | Total (n=24813) | Low Risk (n=12770) | High Risk (n=12043) | P-value |
|---|---|---|---|---|
| 30-day Mortality | 336 (1.4%) | 113 (.9%) | 223 (1.9) | <0.001 |
| Operative Mortality | 30 (.12%) | 13 (.1%) | 17 (.14%) | 0.37 |
| Overall Morbidity | 3327 (13.4) | 1500 (11.7) | 1827 (15.2) | <0.001 |
| Major Complication Rate | 2648 (11) | 1208 (9) | 1440 (12) | <0.001 |
| Early return to OR | 1110 (4%) | 534 (4%) | 576 (4.79%) | 0.02 |
| Length of stay (hospital) (days) | 2 (1–3) | 2 (1–3) | 2 (1–4) | <0.001 |
| Operative time | 136 (104–181) | 132 (101–177) | 140 (106–185) | <0.001 |
| Superficial SSI | 385 (1.6%) | 156 (1.2%) | 229 (1.9%) | <0.001 |
| Deep SSI | 118 (.48%) | 53 (.41%) | 65 (.54%) | 0.151 |
| Organ Space SSI | 33 (.13%) | 17 (.13%) | 16 (.13%) | 1.00 |
| Wound Dehiscence | 70 (.28%) | 26 (.2%) | 44 (.37%) | 0.016 |
| Sepsis | 202 (.81%) | 79 (.62%) | 123 (1.02%) | <0.001 |
| Septic Shock | 157 (.63%) | 53 (.41%) | 104 (.86%) | <0.001 |
| Pneumonia | 329 (1.33%) | 115 (.9%) | 214 (1.78%) | <0.001 |
| Unplanned Reintubation | 376 (1.52%) | 116 (.91%) | 260 (2.16%) | <0.001 |
| Prolonged Ventilator Dependence | 304 (1.23%) | 99 (.77%) | 205 (1.70%) | <0.001 |
| PE | 54 (.22%) | 29 (.23%) | 25 (.21%) | 0.747 |
| Renal Failure | 207 (.83%) | 77 (.6%) | 130 (1.08%) | <0.001 |
| UTI | 431 (1.74%) | 196 (1.53%) | 235 (1.95%) | 0.011 |
| Stroke | 105 (.42%) | 51 (.4%) | 54 (.45%) | 0.546 |
| Cardiac Arrest | 124 (.5%) | 37 (.29%) | 87 (.72%) | <0.001 |
| MI | 228 (.92%) | 89 (.70%) | 139 (1.16 %) | <0.001 |
| Post-op Bleeding | 1753 (7.06%) | 856 (6.7%) | 897 (7.46%) | 0.02 |
| DVT | 134 (.54%) | 63 (.49%) | 71 (.59%) | 0.296 |
SSI: Surgical Site Infection, PE: Pulmonary Embolism, UTI: Urinary Tract Infection, MI: Mycoardial Infarction, DVT: Deep Vein Thrombosis. Early return to OR is defined by a return to the OR within 30 days of the primary procedure.
Categoric data are shown as number (%) and continuous data as median (interquartile range)
Univariate comparisons for continuous variables made with Student’s t-test; comparisons for categorical variables made using Pearson’s chi-squared test or Fisher’s exact test, as appropriate.