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Table 2 Univariate and multivariate cox regression model of overall survival for advanced PBTC

From: A nomogram for predicting survival in patients with advanced (stage III/IV) pancreatic body tail cancer: a SEER-based study

Variables Univariate analysis Multivariate analysis
HR 95% CI P HR 95% CI P
Age
 < 65 Ref      
 ≥ 65 1.491 1.324–1.678 0.000 1.355 1.202–1.528 0.000
Sex
 Male Ref      
 Female 0.945 0.841–1.061 0.339    
Race
 White Ref      
 Black 1.041 0.89–1.218 0.612    
 Others 0.987 0.783–1.244 0.912    
Grade
 I (Well) Ref      
 II (Moderately) 2.328 1.913–2.832 0.000 2.280 1.863–2.790 0.000
 III (Poorly) 3.159 2.597–3.844 0.000 2.854 2.326–3.502 0.000
 IV (Undifferentiated) 2.379 1.589–3.561 0.000 2.419 1.610–3.636 0.000
AJCC stage
 III Ref      
 IV 1.306 1.126–1.514 0.000    
T stage
 T1 Ref      
 T2 1.755 1.175–2.620 0.006 1.029 0.687–1.540 0.891
 T3 1.246 0.837–1.856 0.279 0.941 0.629–1.408 0.769
 T4 1.393 0.937–2.069 0.101 0.955 0.633–1.442 0.827
N stage
 N0 Ref      
 N1 0.953 0.846–1.073 0.424 1.246 1.101–1.409 0.000
M stage
 M0 Ref      
 M1 1.306 1.126–1.514 0.000 1.233 1.017–1.494 0.033
Surgery
 No Ref      
 Yes 0.337 0.290–0.391 0.000 0.350 0.297–0.413 0.000
Radiotherapy
 No Ref      
 Yes 0.735 0.618–0.873 0.000 0.891 0.740–1.072 0.221
Chemotherapy
 No Ref      
 Yes 0.972 0.858–1.102 0.662 0.699 0.612–0.798 0.000
  1. PBTC pancreatic body tail cancer, HR hazard ratio, CI confidence intervals AJCC American joint committee on cancer