“…Individual confounding factors included: age in years ( Carlini et al, 2010 ; Hibell et al, 2007 ), male or female ( Carlini et al, 2010 ; Hibell et al, 2007 ), maternal schooling ( Malta, Mascarenhas, Porto, Barreto, & Neto, 2014 ), school's administration (public or private) ( Carlini et al, 2010 ), student engaged in a remunerated activity ( Souza & Silveira-Filho, 2007 ), reported having had sexual relations ( Malta et al, 2014 ), live with parents at the time of the interview ( Brooks et al, 2012 ; Horta, Horta, & Pinheiro, 2006 ), students' perception of how parents would react if they come home drunk ( Brooks et al, 2012 ; Larrosa & Palomo, 2010 ), reported having suffered domestic violence in the preceding 30 days ( Larrosa & Palomo, 2010 ), reported having been victim of bullying in the preceding 30 days ( Luk, Wang, & Simons-Morton, 2012 ; Strauch, Pinheiro, Silva, & Horta, 2009 ), reported missing school without parents' permission in the preceding 30 days ( Fraile Duvicq, Pereira, & Carvalho, 2004 ; Malta et al, 2014 ), reported having close friends ( Fazel, Hoagwood, Stephan, & Ford, 2014a ; Fazel, Patel, Thomas, & Tol, 2014b ).…”