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Table 4 Routes of using drugs prior to treatment among MMT patients (n = 810) in Tehran according to their main drug of abuse

From: Patterns of pre-treatment drug abuse, drug treatment history and characteristics of addicts in methadone maintenance treatment in Iran

Variable

Opium (N %)

Crystalline heroin (N %)

Other drugs (N %)

Total (N %)

Smoking route

Yes

425 (77)

180 (94)

29 (48)

634 (79)

No

126 (23)

11 (6)

32 (52)

169 (21)

Total (N)

551

191

61

803

Snorting (Sniffing) route

Yes

4 (1)

14 (7)

10 (16)

28 (4)

No

547 (99)

177 (93)

51 (84)

775 (96)

Total (N)

551

191

61

803

Oral route

Yes

322 (58)

33 (17)

32 (53)

387 (48)

No

229 (42)

158 (83)

29 (47)

416 (52)

Total (N)

551

191

61

803

Injection route

Yes

3(1)

19 (10)

16 (26)

38 (5)

No

548 (99)

172 (90)

45 (74)

765 (95)

Total

551

191

61

803