Table 2. Intraoperative condition and pathological staging.
| Variables | Pre-EC (n=103) | Post-EC (n=113) | Statistical value | P value |
|---|---|---|---|---|
| Operation time1 (h), median [IQR] | 3 [3, 4] | 3 [3, 4] | –1.773 | 0.076 |
| Blood loss1 (mL), median [IQR] | 200 [150, 300] | 200 [150, 300] | –1.695 | 0.090 |
| Removed lymph nodes1, median [IQR] | 32 [19, 39] | 28 [18, 36] | –1.294 | 0.196 |
| Pathology2, n (%) | 0.001 | 0.977 | ||
| Adenocarcinoma | 94 (91.26) | 103 (91.15) | ||
| Non-adenocarcinoma | 9 (8.74) | 10 (8.85) | ||
| Staging3, n (%) | – | 0.288 | ||
| I | 85 (82.52) | 84 (74.34) | ||
| II | 10 (9.71) | 11 (9.73) | ||
| III | 7 (6.80) | 17 (15.04) | ||
| IV | 1 (0.97) | 1 (0.88) | ||
| Grading3, n (%) | – | 0.001 | ||
| G1 | 70 (67.96) | 48 (42.48) | ||
| G2 | 20 (19.42) | 37 (32.74) | ||
| G3 | 12 (11.65) | 26 (23.01) | ||
| G4 | 1 (0.97) | 2 (1.77) | ||
| Muscular invasion2, n (%) | 3.087 | 0.079 | ||
| None or <1/2 layers | 72 (69.90) | 66 (58.41) | ||
| ≥1/2 layers | 31 (30.10) | 47 (41.59) | ||
| Vascular invasion3, n (%) | – | 0.012 | ||
| None | 101 (98.06) | 101 (89.38) | ||
| With | 2 (1.94) | 12 (10.62) | ||
| Cervical invasion2, n (%) | 0.042 | 0.837 | ||
| None | 94 (91.26) | 104 (92.04) | ||
| With | 9 (8.74) | 9 (7.96) | ||
| Affecting the uterine adnexa3, n (%) | – | 0.293 | ||
| No | 98 (95.15) | 103 (91.15) | ||
| Yes | 5 (4.85) | 10 (8.85) | ||
| Lymphatic metastasis3, n (%) | – | 0.003 | ||
| No | 102 (99.03) | 101 (89.38) | ||
| Yes | 1 (0.97) | 12 (10.62) | ||
| Para-uterine invasion3, n (%) | – | 0.248 | ||
| No | 103 (100.00) | 110 (97.35) | ||
| Yes | 0 (0.00) | 3 (2.65) | ||
| Tumor size2, n (%) | 0.262 | 0.609 | ||
| Max diameter <3 cm | 64 (62.14) | 74 (65.49) | ||
| Max diameter ≥3 cm | 39 (37.86) | 39 (35.51) |
1, nonparametric U test; 2, chi-squared test; 3, Fisher exact test. IQR, interquartile range; n, number; EC, endometrial carcinoma.