Table 2.
The perioperative period characters of the three groups (x̅ ± s/(%))
| Group V (n = 174) | Group A (n = 93) | Group M (n = 67) | P-Values | |
|---|---|---|---|---|
| Operations by senior surgeon (n, %) | 125 (71.8) | 60 (64.5) | 38 (56.7) | 0.073 |
| Operation time (min) | 186.2 ± 53.6 | 167.0 ± 45.2 | 190.5 ± 62.5 | 0.797 |
| Bleeding amount (mL) | 148.3 ± 142.9 | 105.1 ± 97.5 | 107.0 ± 123.0 | 0.005 |
| Hemoglobin variation | 12.5 ± 8.0 | 10.2 ± 7.1 | 12.9 ± 10.3 | 0.802 |
| Required blood transfusion (n, %) | 7 (4.0) | 3 (3.2) | 1 (1.5) | 0.663 |
| Drainage time (day) | 6.6 ± 3.0 | 5.8 ± 3.4 | 6.3 ± 3.3 | 0.293 |
| Hospital stay time (day) | 9.5 ± 9.9 | 8.0 ± 4.0 | 8.7 ± 4.2 | 0.270 |
| Complications (n, %) | 44 (25.3) | 23 (24.7) | 13 (19.4) | 0.625 |
| Pathological types (n, %) | 0.826 | |||
| Squamous cell carcinoma | 32 (18.4) | 15 (16.1) | 9 (13.4) | |
| Adenocarcinoma | 134 (77.0) | 75 (80.6) | 54 (80.6) | |
| Others* | 8 (4.6) | 3 (3.2) | 4 (6.0) | |
| Differentiation degree (n, %) | 0.467 | |||
| Highly differentiated | 23 (13.2) | 16 (17.2) | 11 (16.7) | |
| Moderately differentiated | 86 (49.4) | 52 (55.9) | 31 (47.0) | |
| Poorly differentiated | 65 (37.4) | 25 (26.9) | 24 (36.4) | |
| TNM stages (n, %) | 0.477 | |||
| I | 138 (79.3) | 79 (84.9) | 56 (83.6) | |
| II | 36 (20.7) | 14 (15.1) | 11 (16.4) | |
TNM: tumor-node-metastasis classification