Research Article
Surgical Disparities of Parathyroid Carcinoma: Long-Term Outcomes and Deep Excavation Based on a Large Database
Table 2
Univariate analyses results for clinicopathologic parameters associated with the cancer-specific survival and overall survival.
| Covariate | Level | HR | CSS | value | HR | OS | value | 95% CI | 95% CI |
| Age at diagnosis | <45 | Ref. | | | | Ref. | | | | 45–59 | 1.423 | 0.552 | 3.668 | 0.465 | 1.903 | 1.171 | 3.092 | 0.009 | 60–69 | 1.742 | 0.619 | 4.899 | 0.293 | 4.045 | 2.453 | 6.671 | <0.001 | 70–79 | 3.562 | 1.313 | 9.667 | 0.013 | 5.695 | 3.321 | 9.768 | <0.001 | >80 | 8.818 | 2.651 | 29.338 | <0.001 | 14.874 | 7.283 | 30.378 | <0.001 |
| Year of diagnosis | 1973–2004 | Ref. | | | | Ref. | | | | 2004–2015 | 0.548 | 0.28 | 1.073 | 0.079 | 0.873 | 0.61 | 1.25 | 0.459 |
| Sex | Female | Ref. | | | | Ref. | | | | Male | 0.995 | 0.558 | 1.773 | 0.986 | 0.918 | 0.692 | 1.216 | 0.549 |
| Race | White | Ref. | | | | Ref. | | | | Black | 0.891 | 0.398 | 1.997 | 0.779 | 1.529 | 1.071 | 2.183 | 0.019 | Other | 0.249 | 0.034 | 1.814 | 0.17 | 0.764 | 0.424 | 1.378 | 0.371 |
| Extent of diseases | Local disease | Ref. | | | | Ref. | | | | Regional disease | 1.433 | 0.419 | 4.899 | 0.566 | 1.398 | 0.761 | 2.566 | 0.28 | Metastatic disease | 5.08 | 0.622 | 41.467 | 0.129 | 6.604 | 2.296 | 18.999 | <0.001 |
| LN status | Negative | Ref. | | | | Ref. | | | | Positive | 9.06 | 1.828 | 44.898 | 0.007 | 1.735 | 0.721 | 4.172 | 0.219 |
| Size of tumor (cm) | 0–2.9 | Ref. | | | | Ref. | | | | >3 | 5.381 | 1.115 | 25.96 | 0.036 | 1.665 | 0.812 | 3.414 | 0.164 |
| Grade | Well-differentiated | Ref. | | | | Ref. | | | | Moderately differentiated | 0.967 | 0.1 | 9.32 | 0.977 | 0.501 | 0.145 | 1.726 | 0.273 | Poorly differentiated | — | — | — | 0.994 | 1.559 | 0.204 | 11.914 | 0.669 | Undifferentiated | — | — | — | 0.995 | 1.273 | 0.165 | 9.798 | 0.817 |
| Radiation | No | Ref. | | | | Ref. | | | | Yes | 1.553 | 0.658 | 3.668 | 0.315 | 1.409 | 0.895 | 2.219 | 0.138 |
| Surgery | No | Ref. | | | | Ref. | | | | Yes | 0.104 | 0.053 | 0.206 | <0.001 | 0.364 | 0.218 | 0.607 | <0.001 |
| Extent of resection | No definitive treatment | Ref. | | | | Ref. | | | | Parathyroidectomy | 0.083 | 0.039 | 0.177 | <0.001 | 0.299 | 0.175 | 0.511 | <0.001 | En bloc radical resection | 0.087 | 0.019 | 0.396 | 0.002 | 0.331 | 0.15 | 0.731 | 0.006 | Debulking | 0.463 | 0.06 | 3.6 | 0.462 | 0.853 | 0.195 | 3.737 | 0.833 |
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