Table 2. Perioperative outcomes between uniportal and three-port patients after matching.
| Outcomes | Uniportal (n=400) | Three-port (n=1,200) | P value |
|---|---|---|---|
| Convert to thoracotomy | 0 (0.00) | 6 (0.50) | 0.35 |
| Number of LNs harvested | 0.11 | ||
| Mean (SD) | 6.38 (2.97) | 6.70 (3.53) | |
| Median [IQR] | 6.00 [4.00, 8.00] | 6.00 [4.00, 9.00] | |
| Number of LN stations harvested | 0.02 | ||
| Mean (SD) | 4.43 (1.53) | 4.68 (1.98) | |
| Median [IQR] | 4.00 [3.00, 5.00] | 4.00 [3.00, 6.00] | |
| Intraoperative blood loss (mL) | <0.001 | ||
| Mean (SD) | 30.98 (11.88) | 43.78 (8.51) | |
| Median [IQR] | 23.38 [23.38, 48.75] | 41.48 [34.86, 56.14] | |
| Operative time (min) | <0.001 | ||
| Mean (SD) | 106.95 (32.20) | 98.47 (38.09) | |
| Median [IQR] | 105.00 [81.25, 125.00] | 90.00 [70.00, 120.00] | |
| Postoperative hospital stay (days) | 0.14 | ||
| Mean (SD) | 4.25 (2.03) | 4.17 (2.29) | |
| Median [IQR] | 4.00 [3.00, 5.00] | 4.00 [3.00, 4.00] | |
| Hospitalization cost (kUSD) | <0.001 | ||
| Mean (SD) | 7.58 (1.47) | 7.24 (1.51) | |
| Median [IQR] | 7.31 [6.67, 8.16] | 7.05 [6.31, 7.95] | |
| Chest tube drainage (mL) | |||
| Within the first 3 postoperative days | 0.45 | ||
| Mean (SD) | 352.39 (224.73) | 341.01 (268.60) | |
| Median [IQR] | 320.00 [185.00, 480.00] | 290.00 [140.00, 465.00] | |
| Total drainage | |||
| Mean (SD) | 413.18 (372.24) | 433.94 (633.61) | 0.54 |
| Median [IQR] | 330.00 [197.50, 510.00] | 300.00 [140.00, 517.50] | 0.059 |
| Postoperative complications | 17 (4.25) | 56 (4.67) | 0.84 |
| Pulmonary infection | 6 (1.50) | 12 (1.00) | 0.58 |
| Persistent air leakage | 8 (2.00) | 19 (1.58) | 0.74 |
| Chylothorax | 1 (0.25) | 8 (0.67) | 0.56 |
| Others* | 5 (1.25) | 19 (1.58) | 0.81 |
Data were presented as mean (SD), median [IQR], or number (%). *, other included atelectasis, respiratory failure, surgical site infection, subcutaneous emphysema, arrhythmia, and cerebral infarction. IQR, interquartile range; LNs, lymph nodes.