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Table 2 Univariate and cox model analysis of the predictors for distant metastasis control survival

From: Predictors of distant metastasis in parotid acinic cell carcinoma

Variables Univariate Cox model
  Log rank test HR (95% CI) p
Age (< 55 vs ≥55) 0.258   
Sex (Male vs female) 0.371   
Tumor stage (T1 + T2 vs T3 + T4) 0.004 2.674(0.978–7.995) 0.089
Node stage (N0 vs N+) 0.011 3.612(0.287–13.611) 0.483
Disease stage (I + II vs III + IV) < 0.001 3.874(1.843–9.664) < 0.001
Resection extent (TP vs PP + SP)a 0.482   
Tumor site (Deep vs superficial) 0.337   
Margin (Positive vs negative) 0.687   
Perineural invasion 0.141   
Lymphovascular invasion 0.009 2.813(0.846–9.473) 0.219
High grade transformation 0.028 4.219(1.948–15.553) < 0.001
IPN metastasisb 0.048 1.854(1.061–4.144) 0.011
Radiotherapy 0.035 0.644 (0.433–0.893) 0.005
  1. aTP total parotidectomy, PP partial parotidectomy, SP superficial parotidectomy; bIPN intraparotid node metastasis