Table 1 Demographic and clinical characteristics in the training and validation cohorts
Characteristic | Training cohort (n = 8898) | Validation cohort n = 127) | ||
|---|---|---|---|---|
Number | % | Number | % | |
Age | ||||
<40 | 404 | 4.54 | 13 | 10.24 |
40-59 | 2229 | 25.05 | 70 | 55.12 |
60-79 | 4322 | 48.57 | 44 | 34.65 |
≥80 | 1943 | 21.84 | 0 | 0 |
Sex | ||||
Male | 4856 | 54.57 | 52 | 40.94 |
Female | 4042 | 45.43 | 75 | 59.06 |
Race | ||||
White | 7138 | 80.22 | 0 | 0 |
Black | 848 | 9.53 | 0 | 0 |
Other | 912 | 10.25 | 127 | 100 |
Marital status | ||||
Married | 5219 | 58.65 | 120 | 94.49 |
Separated/Divorced | 803 | 9.02 | 2 | 1.57 |
Widowed | 1590 | 17.87 | 1 | 0.79 |
Single | 1286 | 14.45 | 4 | 3.15 |
Primary tumor sites | ||||
Cardiac/Fundus | 1079 | 12.13 | 19 | 14.96 |
Body | 1200 | 13.49 | 48 | 37.80 |
Antrum/Pylorus | 1433 | 16.10 | 47 | 37.00 |
Lesser/Greater curvature | 853 | 9.59 | 3 | 2.36 |
Other | 4333 | 48.70 | 10 | 7.87 |
Histologic subtype | ||||
DLBCL | 3758 | 42.23 | 53 | 41.73 |
MALT | 3989 | 44.83 | 55 | 43.31 |
Other B cell lymphoma | 483 | 5.43 | 8 | 6.30 |
T/NK cell lymphoma | 108 | 1.21 | 4 | 3.15 |
Other NHL | 352 | 3.96 | 3 | 2.36 |
HL | 16 | 0.18 | 0 | 0 |
NOS | 192 | 2.16 | 4 | 3.15 |
Stage | ||||
stage I | 5496 | 61.77 | 30 | 23.62 |
stage II | 1363 | 15.32 | 22 | 17.32 |
stage III | 506 | 5.69 | 0 | 0 |
stage IV | 1533 | 17.23 | 35 | 27.56 |
Unknown | NA | NA | 40 | 31.50 |
Surgery | ||||
Yes | 916 | 10.29 | 18 | 14.17 |
No/Unknown | 7982 | 89.71 | 109 | 85.83 |
Radiotherapy | ||||
Yes | 2183 | 24.53 | 54 | 42.52 |
No/Unknown | 6715 | 75.47 | 73 | 57.48 |
Chemotherapy | ||||
Yes | 4470 | 50.24 | 78 | 61.42 |
No/Unknown | 4428 | 49.76 | 49 | 38.58 |
Status | ||||
Alive | 4104 | 46.12 | 119 | 93.70 |
Dead | 4794 | 53.88 | 8 | 6.30 |
Cancer-specific dead | ||||
Yes | 2267 | 25.48 | NA | NA |
No | 6631 | 74.52 | NA | NA |