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Table 4 Relationship between x-ray variables and death (n = 824) – Univariate analyses

From: Predicting risk of mortality in dialysis patients: a retrospective cohort study evaluating the prognostic value of a simple chest X-ray

Variables Hazard ratio [95% CI] Model p Model AUROC [95% CI]
Model 1   <0.001 0.60 [0.55, 0.65]
CTR 1.78 [1.40, 2.27]   
Model 2   <0.001 0.63 [0.58, 0.68]
AAC -   
0 referent   
1 2.43 [1.64, 3.61]   
2 2.22 [1.41, 3.49]   
3 4.35 [2.48, 7.66]   
Model 3   <0.001 0.65 [0.60, 0.70]
CTR 1.52 [1.17, 1.97] 0.002  
AAC   <0.001  
0 referent   
1 2.16 [1.45, 3.24]   
2 1.81 [1.13, 2.89]   
3 3.49 [1.17, 1.97]   
  1. CTR = Cardiothoracic ratio; AAC = Aortic arch calcification score; AUROC = area under the receiving operator curve.