Variables | Single Metastasis (n = 9425)c | Multiple Metastases (n = 2460)c | ||
---|---|---|---|---|
HRa(95% CIb) | P value | HR (95% CI) | P value | |
Gender | ||||
Male | Reference | Reference | ||
Female | 0.938 (0.898–0.980) | 0.004 | 0.931 (0.856–1.013) | 0.095 |
Age (years) | ||||
≤ 65 | Reference | Reference | ||
> 65 | 1.460 (1.397–1.526) | < 0.001 | 1.344 (1.235–1.461) | < 0.001 |
Race | ||||
White | Reference | Reference | ||
Black | 1.075 (1.009–1.145) | 0.026 | 1.007 (0.890–1.140) | 0.907 |
Others | 0.981 (0.902–1.067) | 0.655 | 1.053 (0.904–1.227) | 0.505 |
Tumor location | ||||
Head | Reference | Reference | ||
Body/tail | 1.013 (0.962–1.067) | 0.627 | 1.014 (0.912–1.128) | 0.795 |
Others | 1.138 (1.077–1.202) | < 0.001 | 1.093 (0.980–1.220) | 0.112 |
Marital status | ||||
Married | Reference | Reference | ||
Unmarried/unknown | 1.231 (1.178–1.286) | < 0.001 | 1.246 (1.146–1.355) | < 0.001 |
Grade | ||||
Well/moderately differentiated | Reference | Reference | ||
Poorly differentiated/undifferentiated | 1.718 (1.566–1.884) | < 0.001 | 1.531 (1.273–1.840) | < 0.001 |
Unknown | 1.630 (1.515–1.753) | < 0.001 | 1.411 (1.216–1.637) | < 0.001 |
Tumor size | 1.000 (0.999–1.001) | 0.767 | 1.000 (0.999–1.001) | 0.426 |
Surgery | ||||
No | Reference | Reference | ||
Yes | 0.513 (0.461–0.572) | < 0.001 | 0.749 (0.584–0.961) | 0.023 |
Chemotherapy | ||||
No | Reference | Reference | ||
Yes | 0.432 (0.413–0.452) | < 0.001 | 0.350 (0.320–0.382) | < 0.001 |
Radiotherapy | ||||
No | Reference | Reference | ||
Yes | 0.737 (0.657–0.827) | < 0.001 | 0.729 (0.635–0.838) | < 0.001 |