Table GPSurvey-1. Lifetime prevalence of drug use among all adults (15-64 years old) in nationwide surveys among the general population. Part (ii) Survey methods

	Country and geographical area	Ref.	Year	Data collection method	Survey sample size	Original age range	Age range all adults(1)	Age range young adults (1)	Sample size all adults	Sample size young adults

	Belgium
	Vlanderen (Brussels excluded)	⁽¹⁾	1994	Phone	2259	18-65	18-65	18-35	2259	na
	French Community	⁽²⁾	1996-97	Phone	976	18-49	18-49	18-34	976	508
	French Community	⁽³⁾	1998-99	Phone	1108	18-49	18-49	18-34	1108	504
	French Community	⁽⁴⁾	2000	Phone	694	18-49	18-49	18-34	694	282
	National coverage (Flemish, Wallon and Brussels region)	⁽⁵⁾	2001	Interview	9470	All ages	15-64	15-34	7347	2758
	Czech Republic
	National	⁽¹⁾	2002	Interview	2526	18-64	15-64	15-34	2526	1002
	Denmark
	National	⁽¹⁾	1990	Phone	2000	16+	16+	16-44	2000	na
	National	⁽²⁾	1994	Interview	2521	16-44		16-44		2521
	National	⁽³⁾	2000	Interview	14278	16+	16-64	16-34	11825	4141
	Germany
	Western Germany	⁽¹⁾	1990	Mail	19207	12-39		12-39		19207
	East Germany	⁽²⁾	1990	Mail		12-39		12-39		na
	Old Länder (W. Germany) and New Länder (E. Germany)	⁽³⁾	1995	Mail	7833	18-59	18-59	18-34	7833	3157
	Old Länder (W. Germany) and New Länder (E. Germany)	⁽⁴⁾	1997	Mail	8019	18-59	18-59	18-34	8019	3058
	National	⁽⁵⁾	2000	Mail	8139	18-59	18-59	18-34	8139	3017
	Estonia
	National	⁽¹⁾	1998	Mail	2317	18-70	18-70	18-34	2317	804
	Greece
	Athens	⁽¹⁾	1993	Interview	2103	12-64	12_64	18-35	2103	na
	Greece except Aegean and Ionian Islands	⁽²⁾	1998	Interview	3752	12-64	15-64	15-34	3398	2014
	Spain
	National	⁽¹⁾	1995	Interview	9984	15+	15-64	15-34	8888	5813
	National	⁽²⁾	1997	Interview	12515	15-65	15-65	15-34	12515	6898
	National	⁽³⁾	1999	Interview	12488	15-65	15-64	15-34	12234	6293
	National	⁽⁴⁾	2001	Interview	14113	15-64	15-64	15-34	14113	6915
	France
	National	⁽¹⁾	1992	Phone	2099	18-75	18-75	25-34	2099	373
	Metropolitan France	⁽²⁾	1995	Phone	1993	18-75	18-69	18-39	1787	756
	National	⁽³⁾	1999	Phone	2002	18-75	15-64	15-34	1742	753
	National	⁽⁴⁾	2000	Phone	13685	12-75	15-64	15-34	11317	4749
	Metropolitan France	⁽⁵⁾	2002	Phone	2009	15-75	15-64	15-34	1745	730
	Ireland
	National	⁽¹⁾	1998	Mail	6539	18+	18-64	18-34	na	na
	National	⁽²⁾	1998	Interview	1000	18+	18-64	18-34	826	318
	National	⁽³⁾	2000	Interview	1000	18+	18-64	18-34	907	404
	National	⁽⁴⁾	2002-03	Interview	4925	15-64	15-64	15-34	4925
	Italy
	National	⁽¹⁾	2001	Mail	6032	15-44	15-44	15-34	6032	3698
	Latvia
	National	⁽¹⁾	2003	Interview	4534	15-64	15-64	15-34
	Luxembourg
	National ( representative regional communities)	⁽¹⁾	1998	Interview	667	01/12/1964	15-64	15-34	na	na
	Hungary
	National	⁽¹⁾	2001	Interview	2359	18-65	18-65	18-34	2359	790
	Netherlands
	National	⁽¹⁾	1997-98	Interview	22000	15-64	15-64	15-34	17590	9090
	National	⁽²⁾	2000-01	Multimethod	17655	15-64	15-64	15-34	14045	6687
	Poland
	National	⁽¹⁾	2002	Interview	3148	16+		16-34
	Portugal
	National	⁽¹⁾	2001	Interview	14184	15-64	15-64	15-34	14184	6406
	Slovakia							15-34
	National	⁽¹⁾	2002	Interview		18+	15-64	15-34	1405
	Finland
	National	⁽¹⁾	1992	Mail	3457	18-74	18-74	15-34	3457	1147
	National	⁽²⁾	1996	Mail	3009	16-74	16-74		3009	1000
	National	⁽³⁾	1998	Mail & phone	2568	15-69	15-69	18-34	2568	974
	National	⁽⁴⁾	2000	Interview	1789	15-69	15-64	16-34	1677	615
	National	⁽⁵⁾	2002	Mail	2541	15-69	15-64	15-34	2377	1240
	Sweden
	National	⁽¹⁾	1994	Interview	933	16-75	16-64	15-34	806	310
	National	⁽²⁾	1996	Interview	1351	16-75	16-64	15-34	1136	476
	National	⁽³⁾	1998	Interview	1557	16-75	16-64	15-34	1359	542
	National	⁽⁴⁾	2000	Interview	2027	15-75	15-64	15-34	1750	575
	United Kingdom
	England and Wales	⁽¹⁾	1994	Interview	9645	16-59	16-59	16-34	9645	4329
	England and Wales	⁽²⁾	1996	Interview	10935	16-59	16-59	16-34	10935	4720
	England and Wales	⁽³⁾	1998	Interview	9984	16-59	16-59	16-34	9984	4112
	England and Wales	⁽⁴⁾	2000	Interview	13018	16-59	16-59	16-34	13018	4910
	England and Wales	⁽⁵⁾	2001-02	Interview	20165	16-59	16-59	16-34	20165	9006
	England and Wales	⁽⁶⁾	2002-03	Interview	23586	16-59	16-59	16-34	23586	8520
	Northern Ireland	⁽⁷⁾	2002-03	Interview	3517	15-64	15-64	16-29	3517	na
	Norway
	National	⁽¹⁾	1999	Interview	2170	15+	15-64	15-34	1803	794

Notes:
(1) The age ranges 15-64 and 15-34 are the EMCDDA standards for "all adults" and "young adults". In the respective columns, the actual age ranges used in each country are presented.
This table aims to present 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.
'Data collection' means 'data collection method used in the survey': 'interview' (face to face interview), 'phone' (telephone interview), 'mail' (mailed questionnaire), 'multimethod' (multimethod interview, mail or internet).
'Survey sample' refers to number of respondents to the complete national surveys (Net sample). In some cases, national surveys cover originally broader age range than that presented here for 'All adults' (15-64) and 'Young adults' (15-34).
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.
For methods and definitions see [Methods and definitions - Prevalence and patterns of drug use in the general population].

Sources: See [Table GPSurvey-1 Part(iii) Sources].

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