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Table 4 Multivariate cox regression analysis for overall survival

From: Is there a role for the quantification of RRM1 and ERCC1 expression in pancreatic ductal adenocarcinoma?

A. Survival in Pancreatic CA: Relative Gene Expression (N = 42)

  

Multivariate

Variable (Comparison)

Hazard Ratio

(95% CI)

p -value†

Year of Diagnosis

one year increase

0.97 (0.69, 1.35)

0.836

Age

≥ 65.5 vs. < 65.5

1.53 (0.54, 4.33)

0.419

Positive Lymph Nodes

Any vs. None

0.80 (0.29, 2.22)

0.672

Treatment received

No Chemo vs. Chemo

13.09 (1.71,100.2)

0.013

ERCC1 Rel Gene Expression (PCR)

Low vs. High

0.86 (0.26, 2.81)

0.797

RRM1 Rel Gene Expression (PCR)

Low vs. High

17.58 (1.45,213.5)

0.024

B. Survival in Pancreatic CA: Protein Expression by IHC Score (N = 91)

  

Multivariate

Variable (Comparison)

Hazard Ratio

(95% CI)

p -value †

Year of Diagnosis

one year increase

0.86 (0.71, 1.02)

0.088

Age

≥ 65.5 vs. < 65.5

1.36 (0.74, 2.52)

0.320

Positive Lymph Nodes

Any vs. None

2.34 (1.21, 4.52)

0.011

Treatment

No Chemo vs. Chemo

3.04 (1.25, 7.41)

0.014

ERCC1 IHC

Low vs. High

0.96 (0.53, 1.74)

0.888

RRM1 IHC

Low vs. High

0.83 (0.42, 1.63)

0.583

  1. Stratified by Grade
  2. † Cox regression