Table 1 Characteristics of the patients in each dataset.
ESCC1 training | ESCC2 validation | ESCC3 validation | ESCC4 validation | |
|---|---|---|---|---|
N = 83 (%) | N = 98 (%) | N = 283 (%) | N = 48 (%) | |
Age (years) | ||||
<65 | 55 (66.3) | 57 (58.2) | 139 (49.1) | 41 (85.4) |
≥65 | 28 (33.7) | 41 (41.8) | 144 (50.9) | 7 (14.6) |
Sex | ||||
Male | 64 (77.1) | 73 (74.5) | 238 (84.1) | 41 (85.4) |
Female | 19 (22.9) | 25 (25.5) | 45 (15.9) | 7 (14.6) |
KPS | ||||
90 | 32 (38.6) | 38 (38.8) | 66 (23.3) | 30 (62.5) |
80 | 49 (59) | 58 (59.2) | 180 (63.6) | 18 (37.5) |
70 | 2 (2.4) | 2 (2) | 37 (13.1) | 0 |
Location | ||||
Cervix | 0 | 16 (16.3) | 15 (5.3) | 0 |
Upper | 38 (45.8) | 28 (28.6) | 120 (42.4) | 5 (10.4) |
Middle | 41 (49.4) | 40 (40.8) | 107 (37.8) | 32 (66.7) |
Lower | 4 (4.8) | 14 (14.3) | 41 (14.5) | 11 (22.9) |
Length | ||||
<5 cm | 39 (47.0) | 37 (37.8) | 97 (34.3) | 5 (10.4) |
≥5 cm | 44 (53.0) | 61 (62.2) | 186 (65.7) | 43 (89.6) |
Clinical T stage | ||||
T1 | 0 | 0 | 9 (3.2) | 0 |
T2 | 11 (13.3) | 9 (9.2) | 36 (12.7) | 2 (4.2) |
T3 | 50 (60.2) | 51 (52) | 104 (36.7) | 20 (41.7) |
T4 | 22 (26.5) | 38 (38.8) | 134 (47.3) | 26 (54.2) |
Clinical N stage | ||||
N0 | 0 | 12 (12.2) | 50 (17.7) | 9 (18.8) |
N1 | 83 (100) | 86 (87.8) | 233 (82.3) | 39 (81.2) |
Clinical M stage | ||||
M0 | 83 (100) | 68 (69.4) | 207 (73.1) | 48 (100) |
M1A | 0 | 23 (23.5) | 31 (11) | 0 |
M1B | 0 | 7 (7.1) | 45 (15.9) | 0 |
Clinical TNM stage (6th version) | ||||
I | 0 | 0 | 4 (1.4) | 0 |
IIA | 0 | 8 (8.2) | 24 (8.5) | 4 (8.3) |
IIB | 6 (7.2) | 4 (4.1) | 0 | 2 (4.2) |
III | 77 (92.8) | 56 (57.1) | 179 (63.3) | 42 (87.5) |
IVA | 0 | 23 (23.5) | 31 (11) | 0 |
IVB | 0 | 7 (7.1) | 45 (15.9) | 0 |
pCR | ||||
Yes | NA | NA | NA | 21 (43.8) |
No | NA | NA | NA | 27 (56.2) |
