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Table 3 Comparison of the comorbidities and lifestyle factors

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

Parameter Number of SFs (%) Number of NSFs (%) P-value*
Comorbidity
 Hypertension 15 (50.0) 14 (46.7) 0.7961
 Heart disease 4 (15.4) 3 (11.1) 0.6876
 Cerebrovascular disease 0 (0.0) 2 (6.7) 0.1503
 Diabetes 2 (6.7) 7 (23.3) 0.0706
Habituation
 Smoking 19 (63.3) 9 (30.0) 0.0097
 Drinking 11 (36.7) 6 (20.0) 0.1520
  1. SFs stone formers, NSFs non-stone formers
  2. The bold number indicates a statistically significant difference (*P < 0.05) by the chi-square test for a 2 × 2 table