Table 2.
Univariate analyses with respect to clinical factors and the risk of HT
| Variable | Univariate analysis | |
|---|---|---|
| HR (95% CI) | p value | |
| Sex | ||
| Male | ||
| Female | 1.999 (1.468–2.722) | 0.000* |
| Age | ||
| Per year increase | 0.976 (0.964–0.988) | 0.000* |
| Chemotherapy | ||
| Yes | ||
| No | 1.587 (1.024–2.459) | 0.039* |
| Neck surgery | ||
| Yes | ||
| No | 1.306 (0.727–2.347) | 0.371 |
| Thyrotoxicosis | ||
| Yes | ||
| No | 0.609 (0.440–0.844) | 0.003* |
| T classification | ||
| T1–T2 | ||
| T3–T4 | 1.308 (0.968–1.768) | 0.08 |
| N classification | ||
| N0–N1 | ||
| N2–N3 | 1.524 (1.086–2.137) | 0.015* |
| UICC 2010 stage | ||
| I–II | ||
| III–IV | 1.016 (0.679–1.522) | 0.937 |
| Thyroid volume, per cm3 increase | 0.905 (0.877–0.934) | 0.000* |
| Pituitary volume, per cm3 increase | 0.870 (0.634–1.192) | 0.386 |
*Means p < 0.05