Skip to main content

Advertisement

Table 5 Multivariable analysis (n = 824)

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

Model and variables Hazard ratio [95% CI] P value Model AUROC [95% CI]
Base model (BBM)   Model P < 0.01 0.71 [0.66, 0.76]
Age at chest x-ray (per year) 1.05 [1.03, 1.06] <0.01  
Sex 0.91 [0.62, 1.30] 0.62  
Duration of hemodialysis (per year) 0.98 [0.91, 1.01] 0.53  
Race   <0.01  
Caucasian 1.63 [0.90, 2.90] 0.11  
Aboriginal 2.9 [1.5, 5.4] <0.01  
Other referent -  
Diabetes 0.71 [0.47, 1.07] 0.10  
Heart failure 1.48 [0.92, 2.39] 0.10  
Ischemic heart disease 1 [0.61, 1.64] 1.00  
Creatinine (per 100 mcmol/L) 1.00 [1.00, 1.00] 0.15  
Phosphate (per mcm/L) 1.0 [0.99, 1.00] 0.38  
Base model + CTR   Model P < 0.01 0.71 [0.66, 0.76]
Age at chest x-ray 1.04 [1.03, 1.05] <0.01  
Sex 1.04 [0.73, 1.45] 0.82  
Duration of hemodialysis 0.97 [0.91, 1.03] 0.33  
Race   0.04  
Caucasian 1.53 [0.89, 2.62] 0.13  
Aboriginal 2.03 [1.16, 3.56] 0.01  
Other referent -  
Diabetes 0.83 [0.57, 1.20] 0.31  
Heart failure 1.36 [0.91, 2.05] 0.14  
Ischemic heart disease 0.94 [0.60, 1.46] 0.77  
Creatinine 1.00 [1.00, 1.00] 0.14  
Phosphate 1.00 [0.99, 1.00] 0.35  
CTR 1.46 [1.11, 1.92] <0.01  
Best base model + AAC   Model P < 0.01 0.72 [0.67, 0.76]
Age at chest x-ray 1.04 [1.02, 1.05] <0.01  
Sex 0.97 [0.69, 1.36] 0.86  
Duration of hemodialysis 0.95 [0.89,1.02] 0.14  
Race   0.02  
Caucasian 1.44 [0.84, 2.46] 0.19  
Aboriginal 2.11 [1.20, 3.73] 0.01  
Other referent -  
Diabetes 0.82 [0.57, 1.19] 0.29  
Heart failure 1.47 [0.97, 2.21] 0.07  
Ischemic heart disease 0.85 [0.54, 1.34] 0.48  
Creatinine 1.00 [1.00, 1.00] 0.14  
Phosphate 1.00 [0.99, 1.00] 0.33  
AAC   0.03  
0 referent   
1 1.52 [0.99, 2.34] 0.06  
2 1.22 [0.72, 2.05] 0.47  
3 2.49 [1.28, 4.82] 0.01  
  1. CTR = Cardiothoracic ratio; AAC = Aortic arch calcification score; AUROC = area under the receiving operator curve.