Table 2. Univariate analysis of results of endopoints.
| Single-port | 3-port | p | ||||
|---|---|---|---|---|---|---|
| Total | n = 65 | n = 82 | ||||
| SD | SD | |||||
| Analgesia | Epidural anesthesia | 8 (12) | 53 (65) | |||
| Intercostal nerve block | 57 (88) | 29 (35) | <0.0001 | |||
| Operative time (min) | 65 | 31 | 93 | 39 | <0.0001 | |
| Intraoperative bleeding (g) | 3 | 3 | 6 | 17 | 0.1 | |
| Intraoperative high adhesion | 3 (5) | 5 (6) | 0.73 | |||
| The number of resection part | 1.1 | 0.4 | 1.2 | 0.5 | 0.21 | |
| The number of stapler cartridge used | 4.3 | 1.4 | 3.8 | 1.6 | 0.064 | |
| Length of drain insertion (days) | 1.2 | 0.9 | 1.5 | 0.8 | 0.1 | |
| Postoperative complication (CD classification ≥III) | 1 | (postoperative pneumothorax) | 1 | (Pleural effusion) | 0.87 | |
| Pathological positive margin | 0 (0) | 0 (0) | ||||
| Surgical margin distance (mm) | 17 | 6 | 16 | 8 | 0.49 | |
| Diagnosis | Lung cancer | 31 (47) | 37 (45) | |||
| Metastasis | 29 (45) | 40 (49) | ||||
| Other | 5 (8) | 5 (6) | 0.85 | |||
| Postoperative day 1 | Average of NRS § | 0.4 | 0.5 | 0.9 | 0.9 | <0.0001 |
| Max of NRS | 2.5 | 2.1 | 3 | 2.4 | 0.12 | |
| Amounts of 25 mg tramadol (tablets) | 0.5 | 0.9 | 0.9 | 1.6 | 0.35 | |
| Postoperative day 7 | Average of NRS § | 0.1 | 0.3 | 0.5 | 0.5 | <0.0001 |
| Max of NRS | 0.5 | 0.7 | 0.9 | 1.1 | 0.015 | |
| Amounts of 25 mg tramadol (tablets) | 0.1 | 0.4 | 0.6 | 1.7 | 0.015 | |
Values represent n (%), mean.CD: Clavien–Dindo; NRS: numerical rating scale