Fig. 1

Relative importance of variables on models to predict 1-year relapse. Interpretation: N2 = N stage 1, N3 = N stage 2; grade 2 = moderate differentiation, grade 3 = poor differentiation or undifferentiated; ATI1 = with adipose tissue invasion; VI1 = with vascular invasion; CA1991 = CA 199 ≥ 37U/mL