“…Of the 19 included studies, 17 (reported in 18 articles; Altiparmak, Altiparmak, & Sari, 2011;Covaciu, Bergström, Lind, Svartengren, & Kull, 2013;Danansuriya & Rajapaksa, 2012;French, Christie, & Sowden, 1994;French, Carroll, Christie, 1998;Grootenhuis, Koopman, Verrips, Vogels, & Last, 2007;Hallstrand, Curtis, Aitken, & Sullivan, 2003;Hutchings et al, 2007Hutchings et al, , 2008Kojima et al, 2009;Matterne, Schmitt, Diepgen, & Apfelbacher, 2011;Merikallio, Mustalahti, Remes, Valovirta, & Kaila, 2005;Montalto, Bruzzese, Moskaleva, Higgins-D'Alessandro, & Webber, 2004;Moreira et al, 2013;Sawyer et al, 2001;Upton et al, 2005;Van Gent et al, 2007;Wang, Wang, Wang, Xu, & Zhang, 2012) examined the QoL of 32,874 children and adolescents and four studies (Gau et al, 2010;Hatzmann, Heymans, Ferrer-i-Carbonell, Van Praag, & Grootenhuis, 2008;Moreira et al, 2013;Van Gent et al, 2007) examined the QoL of 8,062 parents, from 13 different countries. The study design and sample characteristics are detailed in Table 2.…”