Table 1: Characteristics of study groups.

Group I 
( )
Group II 
( )
Group III 
( )
value

Mean Age50.5 ± 15.435.2 ± 11.130.33 ± 8.5<0.0001
Sex
 Male26 (72)33 (92)12 (33)< 0.0001
 Female10 (28)3 (8)24 (67)

Data presented as means ± 1SD and number (%). Group I: hemodialysis patients; Group II: intravenous drug user diseases; Group III; healthy blood donors.
values calculated with one way ANOVA and chi-square test.