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Table 5 Multivariate analysis of factors affecting overall survival

From: Intensity modulated radiotherapy for locally advanced and metastatic pancreatic cancer: a mono-institutional retrospective analysis

Variable

Category

Hazard ratio

95% CI

p value *

Tumor location

Body/tail

0.28

0.11 - 0.71

0.008

 

Head

1

  

CA19-9 at diagnosis (U/mL)

<1000

0.36

0.14 - 0.90

0.029

 

≥1000

1

  

Concurrent chemotherapy

Yes

0.37

0.16 - 0.83

0.016

 

No

1

  
  1. *Multivariate analysis using the Cox proportional hazards model.
  2. CI confidence interval, CA19-9 carbohydrate antigen 19–9.