Table 1 Demographic and clinicopathological characteristics of 2102 rectal cancer patients
Variables | No-radio (n = 718) | Radio (n = 1384) | P value |
|---|---|---|---|
Gender | 0.094 | ||
Male | 386 (53.8%) | 797 (57.6%) | |
Female | 332 (46.2%) | 587 (42.4%) | |
Age, Y | 0.757 | ||
≤ 60 | 384 (53.5%) | 750 (54.2%) | |
> 60 | 334 (46.5%) | 634 (45.8%) | |
Year of diagnosis | 0.000 | ||
2004–2009 | 303 (42.2%) | 794 (57.4%) | |
2010–2016 | 415 (57.8%) | 590 (42.6%) | |
Race | |||
White | 583 (81.2%) | 1117 (80.7%) | 0.451 |
Black | 56 (7.8%) | 121 (8.7%) | |
Other | 79 (11.0%) | 146 (10.5%) | |
Grade | 0.200 | ||
Grade I/II | 592 (82.5%) | 1125 (81.3%) | |
Grade III/IV | 112 (15.6%) | 213 (15.4%) | |
Unknown | 14 (1.9%) | 46 (3.3%) | |
Histology | 0.846 | ||
Adenocarcinoma | 672 (93.6%) | 1295 (93.6%) | |
Mucinous & SRCC* | 40 (5.6%) | 74 (5.3%) | |
Others | 6 (0.8%) | 15 (1.1%) | |
Tumor size (mm) | 0.929 | ||
≤ 50 | 510 (71.0%) | 989 (71.5%) | |
> 50 | 149 (20.8%) | 278 (20.1%) | |
Unknown | 59 (8.2%) | 117 (8.5%) | |
Surgical type | |||
Sphincter preservation | 640 (89.1%) | 1154 (83.4%) | 0.000 |
APR | 78 (10.9%) | 230 (16.6%) | |
T stage | 0.151 | ||
T1 | 127 (17.7%) | 200 (14.5%) | |
T2 | 175 (24.4%) | 349 (25.2%) | |
T3 | 416 (57.9%) | 835 (60.3%) | |
Number of nodes resected | 0.000 | ||
< 12 | 147 (20.5%) | 388 (28.0%) | |
≥ 12 | 571 (79.5%) | 996 (72.0%) | |
Number of nodes positive | 0.147 | ||
1 | 382 (53.2%) | 675 (48.8%) | |
2 | 210 (29.2%) | 451 (32.6%) | |
3 | 126 (17.5%) | 258 (18.6%) |