Table 3. Multivariable analysis of DFS and OS.
| Characteristics | DFS | OS | |||
|---|---|---|---|---|---|
| HR (95% CI) |
p | HR (95% CI) |
p | ||
| Sex | Male Female |
36.4 (0.9-1473.6) |
0.057 | 3.2 (0.4-26.4) |
0.28 |
| Histological type | Salivary duct carcinoma Other |
43.5 (1.1-1686.1) |
0.043 | 6.1 (0.2-201.1) |
0.310 |
| Stage T | pT1-2 pT3-4 |
0.72 (0.06-8.7) |
0.800 | 0.05 (0.0-2.4) |
0.132 |
| Stage N | pN0-1 pN2-3 |
0.45 (0.02-11.1) |
0.624 | 9.6 (0.1-1492.9) |
0.379 |
| Grade | High Intermediate/Low |
0.0 (0.0-6965.0) |
0.936 | 0.02 (0.001-0.9) |
0.044 |
| Lymphovascular invasion | Yes No |
0.13 (0.01-1.8) |
0.129 | 0.35 (0.02-6.9) |
0.488 |
| Perineural invasion | Yes No |
7.4 (0.4-127.9) |
0.167 | 0.57 (0.06-5.3) |
0.623 |
| Extracapsular spread | Yes No |
NA | 0.02 (0.0-1.5) |
0.075 | |
| NA—not applicable. | |||||