Table 2.
Matched cohort comparison.
| Independent variable | VHR | # of cases | CST | # of cases | P value |
|---|---|---|---|---|---|
| Total# of cases | 2245 | 2245 | |||
| Male | 45.4% | 1019 | 45.2% | 1015 | 0.857 |
| Female | 54.6% | 1226 | 54.8% | 1230 | 0.857 |
| Age | |||||
| (20–29) | 20.8% | 467 | 21.4% | 480 | 0.661 |
| (30–39) | 25.8% | 579 | 25.3% | 568 | 0.707 |
| (40–49) | 27.3% | 613 | 26.9% | 604 | 0.814 |
| (50–59) | 19.6% | 440 | 19.7% | 442 | 0.94 |
| (60–69) | 6% | 135 | 6.1% | 137 | 0.9 |
| (70–79) | 0.5% | 11 | 0.6% | 13 | 0.694 |
| BMI | |||||
| Underweight | 0.9% | 20 | 0.6% | 13 | 0.235 |
| Normal | 14.4% | 323 | 11.4% | 256 | 0.003* |
| Overweight | 25.7% | 577 | 26.6% | 597 | 0.519 |
| Obese | 23.9% | 537 | 26.5% | 575 | 0.043* |
| Very obese | 33.8% | 759 | 34.5% | 775 | 0.615 |
| Diabetic | 19% | 427 | 19.9% | 447 | 0.474 |
| HTN | 52.1% | 1170 | 53.9% | 1210 | 0.209 |
| Smoker | 23.9% | 537 | 22.6% | 507 | 0.323 |
| Dialysis | 0.7% | 16 | 0.8% | 18 | 0.491 |
| COPD | 6.1% | 137 | 7% | 157 | 0.228 |
| CHF | 0.4% | 9 | 0.1% | 2 | 0.021* |
| Previous MI | 0% | 0 | 0% | 0 | 0.317 |
| Steroid use | 2.5% | 56 | 2.7% | 61 | 0.779 |
| Ascites | 0.4% | 9 | 0.3% | 7 | 0.796 |
| Level of dyspnea | |||||
| None | 89% | 1998 | 89% | 1998 | 0.962 |
| With exertion | 10.2% | 229 | 10.4% | 233 | 0.806 |
| At rest | 0.8% | 18 | 0.6% | 13 | 0.287 |
| Functional status | |||||
| Independent | 98.3% | 2207 | 98% | 2200 | 0.438 |
| Partially dependent | 1.4% | 31 | 1.7% | 38 | 0.396 |
| Totally dependent | 0.2% | 4 | 0.1% | 2 | 0.479 |
| ASA class | |||||
| 1 | 2% | 45 | 2.2% | 49 | 0.6 |
| 2 | 42.7% | 959 | 42.7% | 959 | 0.976 |
| 3 | 53.1% | 1192 | 52.3% | 1174 | 0.611 |
| 4 | 2.3% | 52 | 2.7% | 61 | 0.387 |
| Wound class | |||||
| Clean | 79.1% | 1776 | 78.7% | 1767 | 0.742 |
| Clean-contaminated | 13.3% | 299 | 12.8% | 287 | 0.595 |
| Contaminated | 3.7% | 83 | 4.1% | 92 | 0.396 |
| Dirty | 3.9% | 88 | 4.4% | 99 | 0.454 |
| CPT code | |||||
| Initial | 55.9% | 1255 | 55.9% | 1255 | 0.952 |
| Recurrent | 44.1% | 990 | 44.1% | 990 | 0.952 |
| Incarcerated | 27.6% | 620 | 27.4% | 615 | 0.92 |
* = 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.