Substance

Abused

Smoker

N = 57 F (%)

Non-smoker

N = 693 (%) F (%)

Total (%)

P value

Alcohols

32 (56.1)

26 (3.8)

6.6)

<0.0001*

Sedatives

11 (19.3)

23 (3.3)

4.52)

<0.0001*

Stimulants

14 (24.6)

16 (2.3)

4.0)

<0.0001*