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Table 6 Analysis of aortic calcification grades

From: Kidney stone formers have more renal parenchymal crystals than non-stone formers, particularly in the papilla region

  Group Grade 0, n (%) Grade 1, n (%) Grade 2, n (%) Grade 3, n (%) P-value*
Total SFs 6 (20.0) 13 (43.3) 6 (20.0) 5 (16.7) 0.3032
NSFs 11 (36.7) 10 (33.3) 4 (13.3) 5 (16.7)  
Men SFs 5 (20.0) 11 (44.0) 5 (20.0) 4 (16.0) 0.4672
NSFs 8 (32.0) 10 (40.0) 2 (8.0) 5 (20.0)  
Women SFs 1 (20.0) 2 (40.0) 1 (20.0) 1 (20.0) 0.3808
NSFs 3 (60.0) 0 (0.0) 2 (40.0) 0 (0.0)  
  1. SFs stone formers, NSFs non-stone formers
  2. *P < 0.05 indicates a statistically significant difference by the Mann–Whitney U-test