Table 1 Baseline patient characteristics of the colorectal cancer cohort (n = 550,325)
Patient Characteristics | All patients No. | Prior malignancy No. (%)+ | No prior malignancy No. (%)+ |
|---|---|---|---|
Age | |||
< 20 | 319 | 2 (0.6) | 317 (99.4) |
20–65 | 190507 | 5091 (2.7) | 185416 (97.3) |
> 65 | 359499 | 26570 (7.4) | 332929 (92.6) |
Sex | |||
Male | 271959 | 17535 (6.4) | 254424 (93.6) |
Female | 278366 | 14128 (5.1) | 264238 (94.9) |
Site | |||
Rectum | 161326 | 8224 (5.1) | 153102 (94.9) |
Colon | 388999 | 23439 (6) | 365560 (94.0) |
Race | |||
White | 458185 | 27267 (6) | 430918 (94.0) |
Black | 52918 | 2845 (5.4) | 50073 (94.6) |
Others | 36920 | 1538 (4.2) | 35382 (95.8) |
Marital Status | |||
Single | 57126 | 2470 (4.3) | 54656 (95.7) |
Married | 299526 | 17787 (5.9) | 281739 (94.1) |
Separated | 8217 | 282 (3.4) | 7935 (96.6) |
Divorced | 37197 | 1891 (5.1) | 35306 (94.9) |
Widowed | 126147 | 8086 (6.4) | 118061 (93.6) |
Stage | |||
Localized | 199159 | 12848 (6.5) | 186311 (93.5) |
Regional | 197018 | 10884 (5.5) | 186134 (94.5) |
Distant | 119763 | 5980 (5) | 113783 (95.0) |
Grade | |||
Well differentiated | 53999 | 3032 (5.6) | 50967 (94.4) |
Moderately differentiated | 288514 | 17377 (6) | 271137 (94.0) |
Poorly differentiated | 88748 | 5470 (6.2) | 83278 (93.8) |
Undifferentiated, Anaplastic | 5936 | 374 (6.3) | 5562 (93.7) |
Histology recode broad groupings | |||
Adenomas and adenocarcinomas | 465847 | 26782 (5.7) | 439065 (94.3) |
Cystic, mucinous and serous neoplasms | 55884 | 3426 (6.1) | 52458 (93.9) |
Epithelial neoplasms, NOS | 18108 | 925 (5.1) | 17183 (94.9) |
Squamous cell neoplasms | 1815 | 118 (6.5) | 1697 (93.5) |
Radiation | |||
Yes | 61226 | 2381 (3.9) | 58845 (96.1) |
No | 482430 | 29039 (6) | 453391 (94.0) |
Surgery | |||
Yes | 467713 | 26940 (5.8) | 440773 (94.2) |
No | 60051 | 4020 (6.7) | 56031 (93.3) |
Ablation | 807 | 61 (7.6) | 746 (92.4) |