“…This study included several mediating variables [marital status ( Botterill et al., 2016 ; Harpin, 2005 ), employment ( Feigelman et al., 1995 ; Harpin, 2005 ), smoking status ( McClernon & Kollins, 2008 ; Petry & Oncken, 2002 ), alcohol dependence ( del Pino-Gutiérrez et al., 2017 ; Wilens, 2004 ), drug use ( Wareham & Potenza, 2010 ; Wilens, 2004 ), IQ ( Biederman et al., 2012 ; Rai et al., 2014 ), common mental disorders (CMDs; depressive episode and/or anxiety disorders) ( Becker et al., 2015 ; Clarke, 2006 ; Davidsson et al., 2017 ), BPD traits ( Matthies & Philipsen, 2014 ; Oliva et al., 2017 ), perceived stress and the number of stressful life events ( Biback & Zack, 2015 ; Vrijsen et al., 2017 ), and impulsivity ( Hodgins & Holub, 2015 ; Miller et al., 2010 )], which may be associated with or be the consequence of ADHD, and also be the cause of gambling problems. Sociodemographic variables.
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