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Table GPS-1. Lifetime prevalence of drug use by age and country, most recent national general population survey available since 2000

Part (i) Survey methods.

Country	Geographical area	Year	Reference	Collection method	Original age range	Original sample size	Age range all adults	Sample size all adults	Age range young adults	Sample size young adults
Belgium	National	2008	(7)	Interview	All ages	11254	15–64	6792	15–34	2550
Bulgaria	National	2008	(3)	Interview	15–64	5139	15–64	5139	15–34	2164
Czech Republic	National	2011	(8)	Interview	15+	1028	15–64	901	15–34	361
Denmark	National	2010	(6)	Interview	16+	15165	16–64	11611	16–34	3381
Germany	National	2009	(8)	Multimethod	18–64	8030	18–64	8030	18–34	3876
Estonia	National	2008	(3)	Mail	15–69	:	15–64	1401	15–34	545
Ireland	National	2010–11	(6)	Interview	15–64	5128	15–64	5128	15–34	:
Greece	National (except Aegean and Ionian Islands)	2004	(3)	Interview	12–64	4781	15–64	4351	15–34	2620
Spain	National	2011	(9)	Interview	15–64	22128	15–64	22128	15–34	10507
France	National	2010	(7)	Phone	15-85	27653	15–64	22774	15–34	7727
Italy	National	2012	(5)	Mail	18–64	18898	18–64	18898	18–34	4966
Cyprus	National	2009	(2)	Interview	15–64	3385	15–64	3385	15–34	1810
Latvia	National	2011	(3)	Interview	15–64	4491	15–64	4491	15–34	2258
Lithuania	National	2008	(2)	Interview	15–64	4777	15–64	4777	15–34	2152
Luxembourg	:	:	:	:	:	:	:	:	:	:
Hungary	National	2007	(3)	Interview	18–64	2710	18–64	2710	18-34	1111
Malta	National	2001	(1)	Interview	18–64	2828	18–64	1755	18–34	640
Netherlands	National	2009	(4)	Interview	15–64	5769	15–64	5769	15–34	:
Austria	National	2008	(2)	Interview	15-93	4196	15–64	3761	15–34	2558
Poland	National	2010	(3)	Interview	15–64	5782	15–64	5782	15–34	3201
Portugal	National	2007	(2)	Interview	15–64	12202	15–64	12202	15–34	4765
Romania	National	2010	(3)	Interview	15–64	5100	15–64	5100	15–34	3108
Slovenia	National	2007	(1)	Interview	15+	2117	15–64	1724	15–34	691
Slovakia	National	2010	(7)	Interview	15–64	4055	15–64	4055	15–34	1769
Finland	National	2010	(8)	Mail/Internet	15–69	4235	15–64	1873	15–34	875
Sweden	National	2008	(5)	Multimethod	15–64	22095	15–64	22095	15–34	16271
Sweden	National	2011	(13)	Mail	16–84	9764	16-64	6964	16-34	2035
United Kingdom	England and Wales	2011-12	(15)	Interview	16-59	26663	16-59	26663	16-34	9691
United Kingdom	Northern Ireland	2010-11	(21)	Interview	15–64	2533	15–64	2533	15-34	855
United Kingdom	Scotland	2010-11	(27)	Interview	16+	8232	16–64	8232	16–34	2432
United Kingdom	United Kingdom	2006	(29)	:	16-59	:	16–59	:	16–34	:
Croatia	National	2012	(1)	Interview	15–64	4756	15–64	4756	15-34	1995
Turkey	National	2011	(1)	Interview	15–64	8045	15–64	8045	15-34	4039
Norway	National	2009	(3)	Interview	15+	2073	15–64	1624	15–34	632

Notes:

This table presents the methods and results for the last surveys available in each country. The number indicated in the column ‘Ref.’ is the reference to the corresponding survey in the table presenting all surveys available for each country Table GPS-0.

This table aims to present an overview of national surveys. Exceptionally, some relevant regional surveys are presented. Some city surveys reported by countries were not included as they tend to produce higher prevalence estimates which are not comparable with estimates for whole countries (or large regions with both urban and rural areas). Athens was included as a reference point for the 1993 survey.

‘Data collection' means 'data collection method used in the survey': 'interview' (face-to-face interview, which may include self-completed sections for the more sensitive questions, also it may include CAPI — computer assisted interviews), 'phone' (telephone interview), 'mail' (mailed questionnaire), 'Multi-method' (Multi-Method — simultaneous use of interview, mail or internet in the same survey).

'Survey sample' refers to the number of actual respondents to the survey (Net sample). In some cases, national surveys cover originally a broader age range ('original age range') than that presented here for the standard groups 'All adults'(15–64) and 'Young adults' (15–34). Sample sizes are presented respectively for the 'original age range', the 'all adults' and 'young adults' groups.

In surveys with small sample sizes results should be interpreted with caution.

Countries were asked to report results using, as far as possible, EMCDDA standard age groups (all adults: 15–64, young adults: 15–34). In countries where age ranges are more restrictive, prevalence estimates may tend to be slightly higher. Some countries have recalculated their prevalence figures using the EMCDDA standard age groups.

For methods and definitions on population surveys in general, see General population surveys of drug use – methods and definitions.

See also 'General notes for interpreting data' on the Explanatory notes and help page.

Sources:

See Table GPS-0.

For more details on methodological features for each survey, see Table GPS-121.

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