Table 3.

Studies on drug use and drug use disorders during and after the economic crisis in European Union countries.

Author [Reference]	Sample	Period Survey	Country	Outcome
Zuccato et al., 2012 [20]	Urban wastewater analysis in two cities	2005 vs. 2009	Italy Wastewater analysis in two cities	Decrease of expensive drugs and increase cheap drugs in wastewater analyses.
Kondilis et al., 2013 [19]	Based upon national statistic health data	Data EMCDDA 2008 vs. 2010	Greece	Number of persons with problematic drug use rose by 11.6% between 2008 and 2010. Among those aged 35 to 64 years, the increase was far more intense at 88.2%.
Colell et al., 2015 [8]	Data from the Spanish Household Survey on Alcohol and Drugs (EDADES). Representative population survey age 15–64 (n = 62,440)	2005/2007 (P1) vs. 2009/2011(P2)	Spain	Unemployed men and women increased sporadic use cannabis vs. employed.