Table 1 Characteristics of two cohorts of patients with AEG
Characteristics | Training cohort (N = 1755) | Validation cohort (N = 273) | ||
|---|---|---|---|---|
No. of patients | % | No. of patients | % | |
Race | ||||
White | 1523 | 86.8 | 0 | 0 |
Black | 81 | 4.6 | 0 | 0 |
Others | 151 | 8.6 | 273 | 100 |
Sex | ||||
Female | 373 | 21.2 | 73 | 26.7 |
Male | 1382 | 78.8 | 200 | 73.3 |
Age (year) | ||||
< 60 | 674 | 38.4 | 154 | 56.4 |
≥ 60 | 1081 | 61.6 | 119 | 43.6 |
Grade | ||||
Low grade | 946 | 53.9 | 223 | 81.6 |
High grade | 809 | 46.1 | 50 | 18.4 |
T stage | ||||
T1 | 355 | 20.2 | 47 | 17.2 |
T2 | 227 | 12.9 | 38 | 13.9 |
T3 | 768 | 43.8 | 63 | 23.1 |
T4 | 405 | 23.1 | 125 | 45.8 |
N stage | ||||
N0 | 716 | 40.8 | 25 | 9.2 |
N1 | 391 | 22.2 | 46 | 16.8 |
N2 | 340 | 19.4 | 68 | 24.9 |
N3 | 308 | 17.6 | 134 | 49.1 |
Size (cm) | ||||
< 1.0 | 83 | 4.7 | 8 | 2.9 |
< 2.0 | 189 | 10.8 | 42 | 15.4 |
< 3.0 | 265 | 15.1 | 49 | 17.9 |
< 5.0 | 584 | 33.3 | 102 | 37.4 |
≥ 5.0 | 634 | 36.1 | 72 | 26.4 |
Number of examined lymph nodes | ||||
< 5 | 128 | 7.3 | 3 | 1.1 |
< 10 | 323 | 18.4 | 5 | 1.8 |
< 15 | 428 | 24.4 | 20 | 7.3 |
≥ 15 | 876 | 49.9 | 245 | 89.7 |
Follow-up time (months, median, IQR) | 33 (14,79) | 21 (12–40) | ||