Table 1:
Preoperative patients’ characteristics
| Variables | Uniportal group (n = 172) | Three-portal group (n = 1808) | P-value |
|---|---|---|---|
| Sex (male), n (%) | 89 (59.7) | 989 (54.7) | 0.507 |
| Age (years), median (IQR) | 69.5 (11.3) | 68.0 (12.0) | 0.002 |
| Charlson index, median (IQR) | 4 (3) | 4 (2) | <0.001 |
| FEV1%, median (IQR) | 92.0 (25.9) | 96.0 (27) | 0.161 |
| Tiffeneau, median (IQR) | 75.6 (15.5) | 76.7 (13.0) | 0.081 |
| COPD, n (%) | 20 (11.6) | 310 (17.1) | 0.080 |
| Diabetes, n (%) | 27 (13.0) | 203 (11.2) | 0.623 |
| Coronary disease, n (%) | 14 (8.1) | 159 (9.0) | 0.881 |
| ECOG score, median (IQR) | 0 (1) | 0 (0) | 0.111 |
| CT scan T dimension (cm), n (%) | |||
| <2 | 87 (50.6) | 951 (52.4) | 0.669 |
| 2–3 | 53 (30.8) | 521 (28.7) | 0.643 |
| 3–5 | 31 (18.0) | 298 (16.4) | 0.681 |
| 5–7 | 1 (0.6) | 37 (2.0) | 0.295 |
| >7 | 0 (0.0) | 1 (0.05) | 0.999 |
| Clinical nodal involvement, n (%) | 14 (8.1) | 86 (4.8) | 0.079 |
| PET scan SUV, median (IQR) | 4 (5) | 3 (7) | 0.024 |
| Right side, n (%) | 110 (64.0) | 1123 (62.1) | 0.694 |
| Lobectomy types, n (%) | |||
| Right upper lobectomy | 60 (34.8) | 632 (34.9) | 0.999 |
| Right middle lobectomy | 8 (4.7) | 157 (8.7) | 0.092 |
| Right lower lobe | 37 (21.4) | 318 (17.6) | 0.238 |
| Upper bilobectomy | 5 (3.0) | 9 (0.5) | 0.001 |
| Lower bilobectomy | 0 (0) | 7 (0.4) | 0.885 |
| Left upper lobectomy | 29 (16.9) | 378 (20.9) | 0.248 |
| Left lower lobectomy | 33 (19.2) | 307 (17.0) | 0.531 |
| Adenocarcinoma, n (%) | 128 (74.5) | 1330 (73.6) | 0.878 |
| Squamocellular carcinoma, n (%) | 19 (11.0) | 228 (12.6) | 0.637 |
| Other histology, n (%) | 25 (14.5) | 250 (13.8) | 0.888 |
| Epidural catheter, n (%) | 11 (6.4) | 475 (26.3) | <0.001 |
| Intercostal block, n (%) | 148 (86) | 932 (51.5) | <0.001 |
| Elastomeric pump, n (%) | 34 (19.8) | 684 (37.8) | <0.001 |
| Pericostal catheter, n (%) | 0 (0.0) | 104 (5.7) | 0.002 |
CT: computed tomography; COPD: chronic obstructive pulmonary disease ; ECOG: eastern cooperative oncology group; FEV1: forced expiratory volume in 1 second; IQR: interquartile range; PET: positron emission tomography; SUV: standardized uptake value.