Table 1 Characteristics of index colorectal cancer among SPCRC patients according to prior tumor location
Variable | RCC (n = 2572) | LCC (n = 3166) | ReC (n = 963) | P |
|---|---|---|---|---|
Age at diagnosis | < 0.0001 | |||
median (range) | 70 (14–97) | 68 (27–96) | 67 (22–96) | |
≤ 50 | 194 (7.5) | 209 (6.6) | 71 (7.4) | |
51–60 | 339 (13.2) | 568 (17.9) | 204 (21.2) | |
61–70 | 776 (30.2) | 1095 (34.6) | 324 (33.6) | |
71–80 | 883 (34.3) | 997 (31.5) | 270 (28.0) | |
≥ 81 | 380 (14.8) | 297 (9.4) | 94 (9.8) | |
Year of diagnosis | 0.158 | |||
1973–1985 | 1273 (49.5) | 1676 (53.0) | 485 (50.4) | |
1986–1995 | 886 (33.7) | 1008 (31.8) | 332 (34.5) | |
1996–2005 | 433 (16.8) | 482 (15.2) | 146 (15.1) | |
Race | 0.007 | |||
white | 2218 (86.2) | 2729 (86.2) | 828 (86.0) | |
Black | 214 (8.3) | 211 (6.7) | 62 (6.4) | |
Others | 140 (5.5) | 206 (7.1) | 73 (7.6) | |
Gender | <0.0001 | |||
Female | 1347 (52.4) | 1389 (43.9) | 402 (41.7) | |
Male | 1225 (47.6) | 1777 (56.1) | 561 (58.3) | |
Stage | <0.0001 | |||
Localized | 1008 (39.2) | 1408 (44.4) | 554 (57.5) | |
Regional | 1395 (54.2) | 1544 (48.8) | 338 (35.1) | |
Distant | 112 (4.4) | 132 (4.2) | 17 (1.8) | |
Unknown | 57 (2.2) | 82 (2.6) | 54 (5.6) | |
Tumor grade | <0.0001 | |||
Grade I | 307 (11.9) | 438 (13.8) | 123 (12.8) | |
Grade II | 1302 (50.6) | 1797 (56.8) | 535 (55.6) | |
Grade III | 537 (20.9) | 357 (11.3) | 116 (12.0) | |
Unknown | 426 (16.6) | 574 (18.1) | 189 (19.6) |