Table 7.
Univariate analysis of risk factors affecting the accuracy of EUS
| Factors | Total number | Consistent group, n (%) | Inconsistent group, n (%) | χ 2 | P |
|---|---|---|---|---|---|
| Sex, male | 117 | 91 (77.8) | 26 (22.2) | 0.138 | 0.71 |
| Age (years) | 163 | 66 (59–72) | 67 (53–74) | - | 1 |
| Tumor size (cm) | |||||
| ≤2 | 113 | 95 (84.1) | 18 (15.9) | 6.71 | 0.01 |
| >2 | 50 | 33 (66.0) | 17 (34.0) | ||
| Location | |||||
| Esophagus upper | 6 | 6 (100.0) | 0 (0) | - | 0.61 |
| Middle | 36 | 30 (83.3) | 6 (16.7) | ||
| Lower | 11 | 8 (72.7) | 3 (27.2) | ||
| Gastric upper | 20 | 17 (85.0) | 3 (15.0) | ||
| Middle | 36 | 28 (77.8) | 8 (22.2) | ||
| Lower | 54 | 39 (72.2) | 15 (27.8) | ||
| Macroscopic type | |||||
| 0–I (elevated) | 37 | 33 (89.2) | 4 (10.8) | 22.43 | 0 |
| 0–II (flat) | 93 | 79 (84.9) | 14 (15.1) | ||
| 0–III (depressed) | 33 | 16 (48.5) | 17 (51.5) | ||
| Sunken mucosa | 76 | 53 (69.7) | 23 (30.3) | 6.53 | 0.011 |
| Irregular mucosal surface | 110 | 79 (71.8) | 31 (28.2) | 9.03 | 0.003 |
| Mucosal erythema or paleness | 157 | 123 (78.3) | 34 (21.7) | - | 1 |
| Ulcer | 47 | 25 (53.2) | 22 (46.8) | 25.14 | 0 |
| Resection method of specimen | |||||
| ESD | 144 | 116 (80.6) | 28 (19.4) | 2.07 | 0.15 |
| Surgery | 19 | 12 (63.2) | 7 (36.8) | ||
| Pathological type | |||||
| HGIN | 55 | 50 (90.9) | 5 (9.1) | 5.31 | 0.07 |
| Intramucosal cancer | 75 | 57 (76.0) | 18 (24.0) | ||
| Submucosal cancer | 33 | 25 (75.8) | 8 (24.2) | ||
| Histopathological type, undifferentiated | 20 | 15 (75.0) | 5 (25.0) | 0.014 | 0.905 |
ESD: Endoscopic submucosal dissection; HGIN: High-grade intraepithelial neoplasia