表 1.
入选患者的基本资料
Baseline characteristic of all patients
| Variables | All patients (n=264) |
Before matching | After matching | |||||
| GA group(n=166) | EGA group(n=98) | P | GA group(n=87) | EGA group(n=87) | P | |||
| GA, general anesthesia with postoperative intravenous analgesia; EGA, combined epidural-general anesthesia with postoperative epidural analgesia; BMI, body mass index; CAD, coronary artery disease; CRF, chronic renal failure; COPD, chronic obstructive pulmonary disease; ASA, American Society of Anesthesiology. | ||||||||
| Age/year, x±s | 63.3±12.1 | 64.2±12.7 | 61.6±10.9 | 0.082 | 61.2±12.8 | 60.5±10.5 | 0.698 | |
| BMI, x±s | 23.8±3.3 | 23.8±3.6 | 23.7±2.8 | 0.749 | 24.2±3.7 | 23.7±2.8 | 0.360 | |
| Preoperative comorbidity, n (%) | ||||||||
| CAD | 37 (14.0) | 29 (17.5) | 8 (8.2) | 0.035 | 4 (4.6) | 5 (5.7) | 1.000 | |
| Hypertension | 117 (44.3) | 82 (49.4) | 35 (35.7) | 0.031 | 38 (43.7) | 29 (33.3) | 0.161 | |
| Stroke | 26 (9.8) | 21 (12.7) | 5 (5.1) | 0.047 | 6 (6.9) | 2 (2.3) | 0.148 | |
| Diabetics | 45 (17.0) | 33 (19.9%) | 12 (12.2) | 0.111 | 11 (12.6) | 8 (9.2) | 0.466 | |
| CRF | 6 (2.3) | 6 (3.6) | 0 (0) | 0.057 | 2 (2.3) | 0 (0) | 0.155 | |
| COPD | 6 (2.3) | 2 (1.2) | 4 (4.1) | 0.130 | 2 (2.3) | 3 (3.4) | 1.000 | |
| ASA grade, n (%) | 0.008 | 0.794 | ||||||
| 1 | 21 (8.0) | 10 (6.0) | 11 (11.2) | 9 (10.3) | 11 (12.6) | |||
| 2 | 188 (71.2) | 111 (66.9) | 77 (78.6) | 76 (87.4) | 73 (83.9) | |||
| 3 | 55 (20.9) | 44 (26.5) | 10 (10.2) | 2 (2.3) | 3 (3.4) | |||
| Surgery site, n (%) | 0.759 | 0.762 | ||||||
| Colon | 118 (44.7) | 73 (44.0) | 45 (45.9) | 45 (51.7) | 43 (49.4) | |||
| Rectal | 146 (55.3) | 93 (56.0) | 53 (54.1) | 42 (48.3) | 44 (50.6) | |||
| Anesthesia time/h, x±s | 5.5±1.7 | 5.4±1.8 | 5.5±1.7 | 0.877 | 5.7±1.6 | 5.5±1.6 | 0.595 | |
| Allogenic blood transfusion, n (%) | 14 (5.3) | 10 (6.0) | 4 (4.1) | 0.496 | 1 (1.1) | 3 (3.4) | 0.312 | |
| Tumor size, n (%) | (n=259) | (n=162) | (n=97) | 0.601 | 0.931 | |||
| < 2 cm | 13 (4.9) | 7 (4.2) | 6 (6.1) | 5 (5.7) | 5 (5.7) | |||
| 2- < 3 cm | 49 (18.6) | 29 (17.5) | 20 (20.4) | 18 (20.7) | 18 (20.7) | |||
| 3- < 5 cm | 117 (44.3) | 71 (42.8) | 46 (46.9) | 38 (43.7) | 42 (48.3)) | |||
| 5- < 7 cm | 50 (18.9) | 36 (21.7) | 14 (14.3) | 15 (17.2) | 11 (12.6) | |||
| ≥7 cm | 30 (11.4) | 19 (11.4) | 11 (11.2) | 11 (12.6) | 11 (12.6) | |||
| Pathological grade, n (%) | 0.158 | 0.346 | ||||||
| Undifferentiation | 1 (0.4) | 0 (0) | 1 (1.0) | 0 (0) | 1 (1.1) | |||
| Low differentiation | 29 (11.0) | 16 (9.6) | 13 (13.3) | 7 (8.0) | 12 (13.8) | |||
| Medium differentiation | 204 (77.3) | 125 (75.3) | 79 (80.6) | 67 (77.0) | 70 (80.5) | |||
| Well differentiation | 5 (1.9) | 1 (0.6) | 4 (4.1) | 1 (1.1) | 4 (4.6) | |||
| Not available | 25 (9.5) | 24 (14.5) | 1 (1.0) | 12 (13.8) | 0 (0) | |||
| Lymph node metastasis, n (%) | 123 (46.6) | 85 (51.2) | 38 (38.8) | 0.060 | 31 (35.6) | 34 (39.1) | 0.638 | |
| Postoperative radio-/chemotherapy, n (%) | 132 (50.4)(n=263) | 81 (48.8)(n=166) | 51 (53.1)(n=97) | 0.411 | 42 (48.3) | 49 (56.3) | 0.288 | |