Table 3 Predictors of relapse among both groups (relapsed and abstinent), with regard to substance-related factors

Main substance

Hash

2 (2.63%) ^a

6 (8.11%) ^a

Fisher’s Exact test

0.002

S

Synthetic cannabinoids

15 (19.74%) ^a

11 (14.86%) ^a

Tramadol

4 (5.26%) ^a

14 (18.92%) ^b

Heroin

37 (48.68%) ^a

34 (45.95%) ^a

Amphetamine

0 (0%) ^a

1 (1.35%) ^a

Multiple

17 (22.37%) ^a

5 (6.76%) ^b

Pregabalin

0 (0%) ^a

3 (4.05%) ^a

Alcohol

1 (1.32%) ^a

0 (0%) ^a

Max dose of heroin if it is the main substance

Less than 0.5

0 (0%)

2 (5.26%)

Fisher’s Exact test

0.34

NS

0.5–1 gm

14 (29.17%)

12 (31.58%)

More than 1 gm

34 (70.83%)

24 (63.16%)

Route of intake

Smoke

17 (22.37%) ^a

18 (24.32%) ^a

X²= 13.297

0.01

S

Injection

25 (32.89%) ^a

24 (32.43%) ^a

Oral

5 (6.58%) ^a

17 (22.97%) ^b

Multiple

17 (22.37%) ^a

5 (6.76%) ^b

Sniffing

12 (15.79%) ^a

10 (13.51%) ^a

Duration of abuse

1–3 years

0 (0%)

2 (2.7%)

Fisher’s Exact test

0.242

NS

More than 3 years

76 (100%)

72 (97.3%)

Craving after 6weeks

No

8 (10.53%)

29 (39.19%)

16.577

<0.001

S

Yes

68 (89.47%)

45 (60.81%)

Previous attempts of abstinence

0

6 (7.89%) ^a

19 (25.68%) ^b

15.87

<0.001

S

1

34 (44.74%) ^a

40 (54.05%) ^a

Two or more

36 (47.37%) ^a

15 (20.27%) ^b

Legal history

No

36 (47.37%)

57 (77.03%)

13.998

<0.001

S

Yes

40 (52.63%)

17 (22.97%)

Imprisonment

No

55 (72.37%)

66 (89.19%)

6.802

0.009

S

Yes

21 (27.63%)

8 (10.81%)