Expression, Mutation, and Amplification Status of EGFR and Its Correlation with Five miRNAs in Salivary Gland Tumours

Figure 3

Overall survival of patients based on Cox proportional hazards regression model. Univariate model with impact of (a) radiotherapy (blue line is without data on RT), (b) age (>60 y at the time of diagnosis), (c) poor clinical prognosis, and (d) lymph node infiltration on overall survival. Multivariate model with impact of (e) radiotherapy and (f) age (>60 y at the time of diagnosis). RT, radiotherapy; ≥, more than 60 years; ≤ less than 60 years; N1, N2, and N3, nodal status of TNM tumour classification; ?, no data of lymph node metastases.

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