Table 3 Multivariate analysis on overall patient survival (Cox regerssion model)

YAP 1 (Negative vs Positive)

3.553

1.561-8.086

0.003

Histological grade (G1 vs G2 vs G3)

1.348

0.861-2.111

0.192

pT classification (pTa/pTis vs pT1 vs pT2-4)

1.668

1.042-2.669

0.033

pN classification (pN- vs pN+)

3.827

1.800-8.136

<0.001

Tumor size (cm) (≦2.4^a vs >2.4)

1.900

0.987-3.657

0.055