Table 2.
Results of multivariate analysis: risk factors for distant metastasis in nasopharyngeal carcinoma
| Variables | Hazard ratio | 95% confidence interval | p value |
|---|---|---|---|
|
Primary tumor volume |
1.012 |
1.003-1.022 |
0.007 |
|
T classification T1 |
1.0 |
ref |
0.152 |
| T2 |
6.291 |
0.827-47.863 |
|
| T3 |
8.690 |
1.146-65.888 |
|
| T4 |
7.488 |
0.882-63.574 |
|
|
N classification N0 |
1.0 |
ref |
<0.001 |
| N1 |
2.009 |
1.018-3.962 |
|
| N2 |
4.095 |
2.080-8.063 |
|
| N3 | 11.931 | 3.454-41.220 |
Abbreviations: ref indicates reference.