Table 1.
Population comparison.
| Independent variable | VHR | # of cases | CST | # of cases | P value |
|---|---|---|---|---|---|
| Total# of cases | 66,194 | 2245 | |||
| Male | 42.5% | 28,132 | 45.2% | 1015 | 0.011* |
| Female | 57.5% | 38,062 | 54.8% | 1230 | 0.011* |
| Age | |||||
| (20–29) | 23.5% | 15,556 | 21.4% | 480 | 0.019* |
| (30–39) | 24.1% | 15,953 | 25.3% | 568 | 0.193 |
| (40–49) | 24.3% | 16,085 | 26.9% | 604 | 0.005* |
| (50–59) | 18.1% | 11,981 | 19.7% | 442 | 0.056 |
| (60–69) | 8.5% | 5626 | 6.1% | 137 | 0.000* |
| (70–79) | 1.4% | 927 | 0.6% | 13 | 0.001* |
| BMI | |||||
| Underweight | 0.8% | 530 | 0.6% | 13 | 0.42 |
| Normal | 17.1% | 11,319 | 11.4% | 256 | 0.000* |
| Overweight | 28.5% | 18,865 | 26.6% | 597 | 0.047* |
| Obese | 24.1% | 15,953 | 26.5% | 595 | 0.009* |
| Very Obese | 28.6% | 18,931 | 34.5% | 775 | 0.000* |
| Diabetic | 16.0% | 10,591 | 19.9% | 447 | 0.009* |
| HTN | 49.8% | 32,965 | 53.9% | 1210 | 0.000* |
| Smoker | 21.0% | 13,901 | 22.6% | 507 | 0.07 |
| Dialysis | 1.0% | 662 | 0.8% | 18 | 0.413 |
| COPD | 5.1% | 3376 | 7% | 157 | 0.000* |
| CHF | 0.3% | 199 | 0.1% | 2 | 0.069 |
| Previous MI | 0.1% | 66 | 0% | 0 | 0.461 |
| Steroid use | 3.2% | 2118 | 2.7% | 61 | 0.176 |
| Ascites | 0.5% | 331 | 0.3% | 7 | 0.188 |
| Level of dyspnea | 66,260 | ||||
| None | 90.8% | 60,104 | 89% | 1998 | 0.006* |
| With exertion | 8.7% | 5759 | 10.4% | 233 | 0.004* |
| At Rest | 0.6% | 397 | 0.6% | 13 | 0.99 |
| Functional status | |||||
| Independent | 98.1% | 64,936 | 98% | 2200 | 0.645 |
| Partially dependent | 1.6% | 1059 | 1.7% | 38 | 0.599 |
| Totally dependent | 0.2% | 132 | 0.1% | 2 | 0.296 |
| ASA class | |||||
| 1 | 6.4% | 4236 | 2.2% | 49 | 0.000* |
| 2 | 49.8% | 32,965 | 42.7% | 959 | 0.000* |
| 3 | 41.0% | 27,140 | 52.3% | 1174 | 0.000* |
| 4 | 2.7% | 1787 | 2.7% | 61 | 0.897 |
| Wound class | |||||
| Clean | 88.2% | 58,383 | 78.7% | 1767 | 0.000* |
| Clean-contaminated | 8.6% | 5693 | 12.8% | 287 | 0.000* |
| Contaminated | 1.5% | 993 | 4.1% | 92 | 0.000* |
| Dirty | 1.7% | 1125 | 4.4% | 99 | 0.000* |
| CPT code | |||||
| Initial | 77.7% | 51,433 | 55.9% | 1255 | 0.000* |
| Recurrent | 22.3% | 14,761 | 44.1% | 990 | 0.000* |
| Incarcerated | 23.9% | 15,820 | 27.4% | 615 | 0.000* |
* = statistically significant value, VHR = patients receiving ventral hernia repair, CST = patients receiving concurrent component separation technique, # = number of cases, BMI = body mass index, HTN = hypertension requiring medication, COPD = past medical history of chronic obstructive pulmonary disease, CHF = history of congestive heart failure, MI = myocardial infarction, ASA = American Society of Anesthesiologists, CPT = current procedural terminology.