Table 3 Cox proportional hazards analysis for overall survival in the pancreatic cancer cohort (A) and the bile duct and ampullary cancer cohort (B) for calpain-2 and calpastatin expression respectively

Calpain 2 expression

0.007

0.342

0.157

0.741

Sex

0.042

2.136

1.029

4.433

T stage

0.672

1.242

0.456

3.380

Node status

0.224

1.642

0.738

3.653

Vascular invasion

0.683

0.868

0.439

1.715

Perineural invasion

0.946

1.030

0.434

2.442

Grade

0.211

1.481

0.801

2.741

Tumour size

0.017

2.929

1.209

7.098

Patient age

0.332

0.709

0.353

1.421

B

p value

Exp(B)

95.0% CI for Exp(B)

Lower

Upper

Cytoplasmic calpastatin

0.037

0.595

0.365

0.968

T stage

0.083

1.525

0.946

2.459

Perineural invasion

0.388

1.251

0.752

2.083

Grade

0.124

1.422

0.908

2.225