Table 2. Quality assessment of the studies.

	CASP Item
	1. Are the results valid?	2. Is a qualitative methodology appropriate?	3. Was the research design appropriate to address the aims of the research?	4. Was the recruitment strategy appropriate to the aims of the research?	5. Was the data collected in a way that addressed the research issue?	6. Has the relationship between researcher and participants been adequately considered?	7. Have ethical issues been taken into consideration?	8. Was the data analysis sufficiently rigorous?	9. Is there a clear statement of findings?	10. How valuable is the research?
Barnicot et al., 2015 [25]	Yes	Yes	Yes	Yes	Yes	Yes	Can’t tell	Yes	Yes	Valuable
Barr, Hodge, & Kirkcaldy, 2008 [26]	Yes	Yes	Yes	Yes	Yes	Can’t tell	Can’t tell	Yes	Yes	Valuable
Bradbury, 2018 [27]	Yes	Yes	Yes	Yes	Yes	Can’t tell	Yes	Yes	Yes	Valuable
Carrotte, Hartup, & Blanchard, 2019 [28]	Yes	Yes	Can’t tell	Yes	Yes	No	No	Yes	Yes	Valuable
Castillo, Ramon, & Morant. 2013 [29]	Yes	Yes	Yes	Yes	Yes	No	Can’t tell	Can’t tell	Yes	Valuable
Chatfield, 2013 [30]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Valuable
Ciclitira et al., 2017 [31]	Yes	Yes	Can’t tell	Yes	Yes	Yes	Yes	Yes	Yes	Valuable
Clarke, 2017 [32]	Yes	Yes	Yes	Yes	Can’t tell	No	No	No	Yes	Valuable
Clarke & Waring 2018 [33]	Yes	Yes	Yes	Yes	Yes	No	Can’t tell	Yes	Yes	Valuable
Crawford et al., 2007 [34]	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Valuable
Cunningham, Wolbert, & Lillie, 2004 [34]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Valuable
Donald et al., 2017 [36]	Yes	Yes	Yes	Yes	Yes	No	No	Yes	Yes	Valuable
Falconer et al., 2017 [37]	Yes	Yes	Yes	Yes	Yes	No	No	Yes	Yes	Valuable
Fallon, 2003 [38]	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Valuable
Flynn et al., 2019 [39]	Yes	Yes	Can’t tell	Yes	Yes	No	No	Can’t tell	Yes	Valuable
Folmo, 2019 [40]	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Valuable
Gillard, Turner, & Neffgen, 2015 [41]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Valuable
Gillard et al., 2015 [42]	Yes	Yes	Yes	Yes	Yes	No	Yes	No	Yes	Valuable
Goldstein, 2015 [43]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Valuable
Haeyan, Kleijberg, & Hinz 2018 [44]	Yes	Yes	Yes	Yes	Yes	Yes	Can’t tell	Yes	Yes	Valuable
Helweg-Joergensen et al., 2019 [45]	Yes	Yes	Yes	Yes	Yes	No	No	Yes	Yes	Valuable
Hodgetts, Wright, & Gough, 2007 [46]	Yes	Yes	Yes	Yes	Yes	No	No	Yes	Yes	Valuable
Hummelen, Wilberg, & Karterud 2007 [47]	Yes	Yes	Can’t tell	Yes	Yes	No	No	Yes	Yes	Valuable
Katsakou et al. 2012 [48]	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Valuable
Katsakou et al. 2017 [49]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Valuable
Larivière et al., 2015 [50]	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Valuable
Leung et al., 2019 [51]	Yes	Yes	Yes	Yes	Yes	No	No	Yes	Yes	Valuable
Lohamn et al., 2017 [52]	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Valuable
Lonargain, Hodge, & Line 2017 [53]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Valuable
Long, Manktelow, & Tracey 2016 [54]	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Valuable
McSherry et al., 2012 [55]	Yes	Yes	Can’t tell	Yes	Yes	No	Yes	Yes	Yes	Valuable
Morant & King, 2003 [56]	Yes	Yes	Yes	Yes	Yes	No	No	No	Yes	Valuable
Morris, Smith, & Alwin, 2014 [57]	Yes	Yes	Yes	Yes	Yes	Can’t tell	Yes	Yes	Yes	Valuable
Mortimer-Jones et al., 2019 [58]	Yes	Yes	Yes	Yes	Yes	No	Yes	No	Yes	Valuable
Naismith et al., 2019 [59]	Yes	Yes	No	Yes	Yes	No	No	Yes	Yes	Valuable
Ng et al., 2019a [60]	Yes	Yes	Yes	Yes	Yes	No	No	Yes	Yes	Valuable
Ng et al., 2019b [61]	Yes	Yes	Yes	Yes	Yes	No	No	Yes	Yes	Valuable
Perseius et al, 2003 [62]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Valuable
Perseius et al., 2005 [63]	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Valuable
Rogers & Acton, 2012 [64]	Yes	Yes	Yes	Yes	Yes	Can’t tell	Yes	Yes	Yes	Valuable
Rogers & Dunne, 2013 [65]	Yes	Yes	Yes	Yes	Yes	Can’t tell	Yes	Yes	Yes	Valuable
Sheperd, Sanders, & Shaw, 2017 [66]	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Valuable
Smith, 2013 [67]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Valuable
Stalker, Ferguson, & Barclay, 2010 [68]	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Valuable
van Veen et al., 2019, [69]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Valuable
Veysey, 2013, [70]	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Valuable
Walker, 2009, [71]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Valuable