Table 1. Distribution of the sample with respect to geographic area, age, gender, main occupation, and level of schooling.

Autonomous Communities		Age		Schooling
Andalusia	15.7%	16 to 25 years	40.9%	Higher Education	63.5%
Aragon	2.5%	26 to 35 years	24.0%	Middle Education	30.4%
Asturias	2.0%	36 to 45 years	17.0%	Basic Education	6.1%
Balearic Islands	1.9%	46 to 55 years	13.1%	No Schooling	4.2%
Canary Islands	3.9%	56 to 65 years	5.0%
Cantabria	1.2%			Drug of abuse use (use ever)
Castilla La Mancha	3.9%	Gender		Alcohol	43.5%
Castilla y Leon	4.4%	Male	47.7%	Tobacco	19.6%
Catalonia	13.1%	Female	53.3%	Cannabis and/or Psychostimulants	5.5%
Extremadura	2.3%
Galicia	5.0%
La Rioja	0.8%	Main Occupation
Madrid	26.2%	Worker	57.3%
Murcia	2.5%	Unemployed	20.2%
Navarra	1.1%	Student	18.7%
Basque Country	3.5%	Household duties	3.8%
Valencia	10.0%

Frequencies obtained from the total sample (1,126 interviews)