Table 2 Multivariate analysis of risk factors in relation to overall survival
Univariate analysis | Multivariate analysis | |||
|---|---|---|---|---|
Variables | Hazard ratio (95% CI) | P-value | Adjusted hazard ratio (95% CI) | P-value |
Age (yr) | ||||
≤ 65 | 1 | 1 | ||
> 65 | 1.529 (0.523–4.471) | 0.438 | 2.119 (0.554–8.105) | 0.273 |
Sex | ||||
Female | 1 | 1 | ||
Male | 0.863 (0.391–1.905) | 0.715 | 1.284 (0.423–3.899) | 0.659 |
Clinical stage | ||||
I, II, III | 1 | 1 | ||
IV | 2.898 (1.088–7.719) | 0.033* | 2.397 (0.612–9.386) | 0.209 |
Surgery | ||||
No | 1 | 1 | ||
Yes | 0.358 (0.161–0.794) | 0.012* | 0.690 (0.247–1.927) | 0.479 |
Skull base invasion | ||||
No | 1 | 1 | ||
Yes | 3.054 (1.290–7.233) | 0.011* | 2.693 (0.611–11.858) | 0.190 |
Infratemporal fossa invasion | ||||
No | 1 | 1 | ||
Yes | 2.414 (1.041–5.600) | 0.040* | 1.500 (0.447–5.027) | 0.512 |
Cavernous sinus invasion | ||||
No | 1 | 1 | ||
Yes | 1.874 (0.718–4.893) | 0.200 | 0.541 (0.138–2.128) | 0.380 |