Table 4. Subset analysis according to tumor location.
| MC | EUS | ≥pT1-SMD | P | |
|---|---|---|---|---|
| Rectum | Tis/ T1-SMS | Tis/ T1-SMS | 3/14 (21.4%) | |
| Tis/ T1-SMS | ≥T1-SMD | 1/2 (50.0%) | ||
| ≥T1-SMD | Tis/ T1-SMS | 2/4 (50.0%) | ||
| ≥T1-SMD | ≥T1-SMD | 8/13 (61.5%) | ||
| Accuracy | 22/33 (66.7%) | 22/33 (66.7%) | 1.000 #1 | |
| Sensitivity | 10/14 (71.4%) | 9/14 (64.3%) | 1.000 #2 | |
| Specificity | 12/19 (63.2%) | 13/19 (68.4%) | 0.732 #1 | |
| Non-rectum | Tis/ T1-SMS | Tis/ T1-SMS | 3/13 (23.1%) | |
| Tis/ T1-SMS | ≥T1-SMD | 1/3 (33.3%) | ||
| ≥T1-SMD | Tis/ T1-SMS | 2/5 (40.0%) | ||
| ≥T1-SMD | ≥T1-SMD | 11/12 (91.7%) | ||
| Accuracy | 25/33 (75.8%) | 25/33 (75.8%) | 1.000 #1 | |
| Sensitivity | 13/17 (76.5%) | 12/17 (70.6%) | 1.000 #2 | |
| Specificity | 12/16 (75.0%) | 13/16 (81.3%) | 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.