Table 2. Patterns of Drug Abuse Prior to Treatment Among MMT Patients (n = 1396).

Substances	Consumption Duration	No. (%)
Marijuana	Past 30 days	10 (0.7)
	In life time	61 (4.4)
Alcohol	Past 30 days	0
	In life time	64 (6.4)
Opium	Past 30 days	660 (47.3)
	In life time	1185 (84.9)
Heroin	Past 30 days	396 (28.4)
	In life time	420 (30.1)
Shireh	Past 30 days	555 (39.8)
(opium juice)	In life time	718 (51.4)
Amphetamine	Past 30 days	16 (1.1)
	In life time	18 (1.3)
Methadone	Past 30 days	65 (4.7)
(illegal)	In life time	95 (6.8)
Hallucinogen	Past 30 days	0
	In life time	11 (0.8)
Sedative	Past 30 days	0
	In life time	33 (2.4)