Table2. Mean of age, duration of drug abuse and imprisonment in patients with viral hepatitis in studied drug abusers.

Variables	Hepatitis B N=12	Hepatitis C N=103	P-value
Age(year)	26.1 ± 3.9	21.4 ± 5.2	0.02
Drug abuse (year)	3.2 ± 1.8	5.9 ± 2.1	<0.0001
Imprisonment (year)	3.6 ± 3.2	6.7 ± 4.9	0.03