Table 2.
Description of intraoperative variables of a case–control study comparing robotic-assisted transversus abdominis release and open transversus abdominis release
| rTAR | oTAR | P * | |
|---|---|---|---|
| n = 90 | n = 79 | ||
| Skin-to-skin operative time (min), mean(s.d.) | 242 (82) | 188 (90) | <0.001 |
| Wound contamination class† | 0.465 | ||
| Clean | 87 (96.7) | 73 (92.4) | |
| Clean contaminated | 2 (2.2) | 4 (5.1) | |
| Contaminated | 1 (1.1) | 2 (2.5) | |
| Dirty | 0 (0) | 0 (0) | |
| Antibiotic prophylaxis | 64 (71.1) | 79 (100) | <0.001 |
| Mesh type used | 0.526 | ||
| Polyester | 68 (75.6) | 61 (77.2) | |
| Polyvinylidene | 17 (18.9) | 17 (21.5) | |
| Polypropylene | 2 (2.2) | 1 (1.3) | |
| Unknown | 3 (3.3) | 0 (0) | |
| Mesh size (cm2), mean(s.d.) | 980 (354) | 1344 (460) | <0.001 |
| Hernia defect closure | 89 (98.9) | 74 (93.7) | 0.119 |
| Combined surgical procedure | 1 (1.1) | 15 (19.0) | <0.001 |
| Intraoperative complications | 8 (8.9) | 13 (16.5) | 0.137 |
rTAR, robotic-assisted transversus abdominis release; oTAR, open transversus abdominis release. Values are n (%) unless otherwise indicated.
*
For normally distributed continuous variables, an independent samples t test was used. When a normal distribution could not be assumed, a Mann–Whitney U test was used. The chi-squared and Fisher’s test were used to compare categorical data. A P value of less than 0.05 was considered statistically significant.
†
According to the Center for Disease Control and Prevention (CDC) classification15.