Factors (Number) | Univariate model | Multivariate model #1 | Multivariate model #2 | ||||||
---|---|---|---|---|---|---|---|---|---|
HR | 95% CI | P | HR | 95% CI | P | HR | 95% CI | P | |
Age (years) | 1.021 | 0.994–1.049 | 0.135 | ||||||
Gender (Male/Female) (95/29) | 1.446 | 0.636–3.290 | 0.379 | ||||||
Primary site | |||||||||
Parotid gland (84) | 1 (Ref.) | ||||||||
Non-parotid gland (40) | 1.246 | 0.640–2.427 | 0.518 | ||||||
TNM categories | |||||||||
T3–4/T1–2 (60/64) | 1.880 | 0.980–3.608 | 0.058 | 0.824 | 0.412–1.648 | 0.584 | 1.145 | 0.593–2.212 | 0.687 |
N1–3/N0 (61/63) | 5.573 | 2.651–11.713 | < 0.001 | 8.669 | 3.787–19.842 | < 0.001 | 5.632 | 2.638–12.027 | < 0.001 |
M1/M0 (15/109) | 4.550 | 2.139–9.680 | < 0.001 | 4.591 | 2.100–10.035 | < 0.001 | |||
Pathological diagnosis | |||||||||
Salivary duct carcinoma (74) | 1 (Ref.) | ||||||||
Squamous cell carcinoma, primary (13) | 1.271 | 0.480–3.368 | 0.629 | ||||||
Adenoid cystic carcinoma, solid type (12) | 1.422 | 0.537–3.766 | 0.479 | ||||||
Mucoepidermoid carcinoma, high-grade (9) | 1.094 | 0.326–3.673 | 0.885 | ||||||
Adenocarcinoma, high-grade (6) | 0.386 | 0.052–2.870 | 0.352 | ||||||
Others* (10) | 1.681 | 0.501–5.642 | 0.440 | ||||||
Treatment modalities | |||||||||
Surgery (13) | 1 (Ref) | 1 (Ref.) | |||||||
Surgery + radiation (62) | 1.247 | 0.372–4.182 | 0.721 | 0.761 | 0.216–2.678 | 0.671 | |||
Surgery + radiation + chemotherapy (28) | 0.418 | 0.084–2.075 | 0.286 | 0.134 | 0.025–0.709 | 0.018 | |||
Others† (21) | 4.589 | 1.281–16.434 | 0.019 | 2.786 | 0.731–10.617 | 0.133 |