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Table 3 Univariate and multivariate cox regression analyses of different prognostic variables for overall survival in patients with stage III and IV of pancreatic cancer

From: Vitamin D deficiency and prognostics among patients with pancreatic adenocarcinoma

  Univariate analysis Multivariate analysis
  No. of patients P Value Regression coefficients (Standard error) Hazard ratio (95% confidence interval) P value
Age:      
   ≥50 years 103 0.7990 0.109 (0.428) 1.101 (0.450-2.693) 0.8334
   <50 years 11     
Race:      
   Non-white 17 0.7842 0.095 (0.345) 1.020 (0.504-2.064) 0.9556
   White 97     
Gender:      0.2731
   Female 52 0.1755 −0.334 (0.246) 0.751 (0.450-1.253)  
   Male 62     
Vitamin D level:      
   <20 ng/mL 53 0.0024 0.752 (0.248) 1.991 (1.156 - 3.430) 0.0131
   ≥20 ng/mL 61     
Season:      
   Autumn 19 0.5497 −0.436 (0.375) 0.648 (0.293-1.433) 0.1789
   Spring 38   0.017 (0.303) 0.997 (0.549-1.812)  
   Summer 22   0.142 (0.335) 1.672 (0.808-3.459)  
   Winter 35     
Body mass index:      
   ≥25 kg/m2 72 0.0040 0.142 (0.335) 0.441 (0.265-0.733) 0.0016
   <25 kg/m2 42