Table 2. Subset analysis according to tumor size.
| MC | EUS | ≥pT1-SMD | P | |
|---|---|---|---|---|
| ≤20 mm | Tis/ T1-SMS | Tis/ T1-SMS | 3/15 (20.0%) | |
| Tis/ T1-SMS | ≥T1-SMD | 2/5 (40.0%) | ||
| ≥T1-SMD | Tis/ T1-SMS | 2/6 (33.3%) | ||
| ≥T1-SMD | ≥T1-SMD | 14/19 (73.7%) | ||
| Accuracy | 31/45 (68.9%) | 32/45 (72.1%) | 0.818 #1 | |
| Sensitivity | 16/21 (76.2%) | 16/21 (76.2%) | 1.000 #1 | |
| Specificity | 15/24 (62.5%) | 16/24 (66.7%) | 0.763 #1 | |
| >20 mm | Tis/ T1-SMS | Tis/ T1-SMS | 3/12 (25.0%) | |
| Tis/ T1-SMS | ≥T1-SMD | 0 | ||
| ≥T1-SMD | Tis/ T1-SMS | 2/3 (66.7%) | ||
| ≥T1-SMD | ≥T1-SMD | 5/6 (83.3%) | ||
| Accuracy | 16/21 (76.2% | 15/21 (71.4%) | 0.726 #1 | |
| Sensitivity | 7/10 (70.0%) | 5/10 (50.0%) | 0.650 #2 | |
| Specificity | 9/11 (81.8%) | 10/11 (90.9%) | 1.000 #2 |
#1 χ2 test
#2 Fisher’s exact probability test. Tis/T1-SMS, mucosal to submucosal cancer with invasion depth <1000 μm; T1-SMD, submucosal cancer with submucosal invasion depth ≥1000 μm.