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Table 3 Distribution of cardiothoracic ratio and aortic arch calcification grade across study population

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

Variable Overall (n = 824) Patients alive at end of follow-up (n = 672) Patients dead at end of follow-up (n = 152) p-value
Cardiothoracic ratio (CTR) 0.53 [0.48, 0.58] 0.52 [0.48, 0.57] 0.55 [0.51,0.59] <0.001
CTR > 0.5 67% (552/824) 64% (527/824) 79% (651/824) <0.001
Aortic arch calcification grade (%)     <0.001
0 54% (445/824) 59% (394/672) 36% (54/152)  
1 24% (198/824) 22% (146/672) 34% (52/152)  
2 17% (140/824) 16% (107/672) 20% (30/152)  
3 5% (41/824) 4% (25/672) 11% (16/152)  
  1. CTR = median [Q1, Q3].