Table 1.

Absolute and relative frequency of at least one time substance abuse by students (n = 610).

	Yes		No
	Number	Percentage	Number	Percentage
Cigarette	211	34.6	399	65.4
Hookah	314	51.5	296	48.5
Alcohol	230	37.7	380	62.3
Tranquilizers	248	40.7	362	59.3
Strong painkiller	62	10.2	548	89.8
Ecstasy	40	6.6	570	93.4
Hashish, bang, marijuana	41	6.7	569	93.3
Heroin	30	4.9	580	95.1
Opium	53	8.7	554	91.3
Pam or Chewable Tobacco	59	9.7	551	90.3