Table 6 Cox regression model including histopathological type and stage, performance status and EphA5 expression

Histopathological type (Adenocarcinoma/Squamous)

2.096 (1.306-3.366)

0.002

Histopathological stage (I + II/III + IV)

2.207 (1.684-4.352)

<0.001

Performance status (0–1/2)

2.231 (1.141-4.362)

0.019

EphA5 expression (Negative/Weak vs Moderate/Strong)

0.642 (0.398-1.034)

0.068