| | Overall survival | Cancer-specific survival | | Univariate analysis | Multivariate Analysis | Univariate analysis | Multivariate analysis |
| Characteristics | HR (95% CI) | P | HR (95% CI) | P | HR (95% CI) | P | HR (95% CI) | P | Age of diagnosis | | | | | | | | | 30–59 years | Reference | | Reference | Reference | Reference | 60–84 years | 1.228 (1.075, 1.402) | 0.002 | 1.186 (1.038, 1.357) | 0.012 | 1.235 (1.065, 1.433) | 0.005 | 1.189 (1.024, 1.381) | 0.023 | Gender | | | | | | | | | Male | Reference | | Reference | Reference | Reference | Female | 0.816 (0.705, 0.943) | 0.006 | 0.832 (0.719, 0.964) | 0.014 | 0.815 (0.693, 0.958) | 0.013 | 0.826 (0.702, 0.972) | 0.022 | Race | | | | | | | | | White | Reference | | Reference | Reference | Reference | Black | 1.048 (0.877,1.251) | 0.608 | 1.093 (0.914,1.306) | 0.329 | 1.052 (0.862,1.283) | 0.62 | 1.100 (0.901,1.342) | 0.35 | Others | 0.576 (0.492, 0.674) | <0.001 | 0.601 (0.513, 0.704) | <0.001 | 0.611 (0.514, 0.725) | <0.001 | 0.633 (0.532, 0.754) | <0.001 | Grade | | | | | | | | | I | Reference | | Reference | Reference | Reference | II | 1.098 (0.946, 1.275) | 0.22 | 1.159 (0.996, 1.349) | 0.057 | 1.122 (0.948, 1.328) | 0.18 | 11.168 (0.985, 1.386) | 0.075 | III | 1.371 (1.142, 1.647) | 0.001 | 1.592 (1.318, 1.924) | <0.001 | 1.500 (1.225, 1.836) | <0.001 | 1.705 (1.383, 2.102) | <0.001 | IV | 1.329 (0.790, 2.237) | 0.284 | 1.523 (0.897, 2.586) | 0.12 | 1.478 (0.843, 2.590) | 0.172 | 1.571 (0.888, 2.782) | 0.121 | SEER stage | | | | | | | | | Localized | Reference | | Reference | Reference | Reference | Regional | 1.417 (1.164, 1.725) | 0.001 | 1.109 (0.900, 1.366) | 0.331 | 1.569 (1.272, 1.937) | <0.001 | 1.204 (0.963, 1.505) | 0.103 | Chemotherapy | | | | | | | | | No | Reference | | Reference | Reference | Reference | Yes | 1.538 (1.315, 1.797) | <0.001 | 1.186 (1.007, 1.397) | 0.041 | 1.667 (1.407, 1.975) | <0.001 | 1.273 (1.065, 1.521) | 0.008 | Tumor size | | | | | | | | | <3 cm | Reference | | Reference | Reference | Reference | 3–5 cm | 1.194 (1.030, 1.383) | 0.018 | 1.319 (1.134, 1.535) | <0.001 | 1.218 (1.031, 1.439) | 0.02 | 1.335 (1.125, 1.583) | 0.001 | >5 cm | 1.259 (1.074, 1.477) | 0.005 | 1.616 (1.352, 1.931) | <0.001 | 1.401 (1.175, 1.671) | <0.001 | 1.783 (1.463, 2.171) | <0.001 | AJCC T | | | | | | | | | T1 | Reference | | Reference | Reference | Reference | T2 | 1.527 (1.340, 1.740) | <0.001 | 1.436 (1.251, 1.648) | <0.001 | 1.657 (1.435, 1.912) | <0.001 | 1.528 (1.313, 1.777) | <0.001 | Treatment | | | | | | | | | Surgical resection | Reference | | Reference | Reference | Reference | Radiofrequency ablation | 1.628 (1.434, 1.847) | <0.001 | 1.828 (1.577, 2.120) | <0.001 | 1.557 (1.351, 1.794) | <0.001 | 1.799 (1.523, 2.125) | <0.001 |
|
|