Table 3.
Univariate and Multivariate Analysis for Overall Survival
| Characteristic | Median survival (months) | Univariate | Multivariate | ||
|---|---|---|---|---|---|
| HR (95%CI) | p-value | HR (95%CI) | p-value | ||
| Age | |||||
| < 59 | NR | 1 | - | ||
| > 59 | 86.82 | 1.38 (0.55-3.48) | 0.495 | - | - |
| ECOG | |||||
| 0 | 89.04 | 1 | - | ||
| 1 | NR | 0.36 (0.08-1.62) | 0.166 | - | - |
| Histological Grade | |||||
| 1 | 104.4 | 1 | 1 | ||
| 2-3 | 9.29 | 4.34 (1.53-12.29) | 0.003* | 3.59 (1.05-12.45) | 0.041* |
| Location | |||||
| Tip | 104.39 | 1 | 1 | ||
| Shaft | 10.91 | 3.43 (1.04-11.29) | 0.031* | 4.01 (0.86-18.81) | 0.078 |
| T stage | |||||
| T1-2 | 125.46 | 1 | - | ||
| T3-4 | 86.82 | 2.00 (0.73-5.47) | 0.167 | - | - |
| Lymph node metastasis (N) | |||||
| N0 | 104.39 | 1 | 1 | ||
| N1 | 36.96 | 2.44 (1.02-5.81) | 0.038* | 1.15 (0.29-4.60) | 0.842 |
| TNM stage | |||||
| Early (I-II) | 125.46 | 1 | 1 | ||
| Late (III-IV) | 53.89 | 3.65 (1.39-9.60) | 0.005* | 2.47 (0.66-9.29) | 0.181 |
| p16INK4A status | |||||
| Negative | 89.04 | 1 | - | ||
| Positive | 104.39 | 0.48 (0.16-1.42) | 0.173 | - | - |
*, Statical significance, p<0.05; NR (not reached), the overall survival did not decrease to the median while analyzing the data; Abbreviations; ECOG, Eastern Cooperative Oncology Group; T, tumor; N, node; M, metastasis