Table 1. Geographical distribution of Italian school’s sample.

National Distribution ESPAD®Italy 2015		Total sub- sample		Computerized and P&P administration		Not returned	Only P&P	Only computerized
Area	%	n = 54	%	n = 12	%	n = 11	n = 27	n = 4
North	38	19	35	3	25	5	10	1
Centre	18	10	19	2	17	3	4	1
South	44	25	46	7	58	3	13	2