Table 1.
Patient and lesion characteristics of EGC in Internal test set and External test set.
| Patient characteristics | Internal test set (n=134) | External test set (n=48) |
|---|---|---|
| Age (years), Mean (range) | 60 (27–79) | 65 (35-84) |
| Sex, Number (%) | ||
| Male | 92 (68.66) | 38 (79.17) |
| Female | 42 (31.34) | 10 (20.83) |
| Size of lesion (mm), Median (range) | 15 (4-48.5) | 17.4 (6-40.2) |
| Tumor location, Number (%) | ||
| Cardias Fundus of the stomach, | 18 (13.43) | 3 (6.25) |
| Number (%) | ||
| Body | 58 (43.28) | 13 (27.08) |
| Angle | 28 (20.90) | 12 (25) |
| Antrum | 30 (22.39) | 20 (41.67) |
| Macroscopic type, Number (%) | ||
| 0-1 | 8 (5.97) | 1 (2.08) |
| O-IIa | 33 (24.63) | 9 (18.75) |
| O-IIb | 7 (5.22) | 2 (4.17) |
| O-IIc | 9 (6.72) | 0 (0) |
| 0-IIa+O-IIc | 47 (35.07) | 22 (45.83) |
| 0-Hc+O-IIa | 18 (13.43) | 10 (20.83) |
| 0-IIb+O-Hc | 12 (8.96) | 3 (6.25) |
| O-III | 0 (0) | 1 (2%) |
| Differentiation status, Number (%) | ||
| Differentiated | 124 (92.54) | 41 (85.42) |
| Undifferentiated | 2 (1.49) | 1 (2.08) |
| Mixed | 8 (5.97) | 6 (12.5) |
| Depth of tumor, Number (%) | ||
| Tla | 128 (95.52) | 44 (91.67) |
| Tlb | 6 (8.96) | 4 (8.33) |
Tla, mucosa; Tlb, submucosa.