“…The quantitative non-randomised papers (Kohler et al, 2015;Muller et al, 2002;Shiva et al, 2009;Sorgaard, 2007) showed a good level of quality, with all four scoring 75%, although some studies reported a low response rate. Of the quantitative descriptive papers reviewed, nine scored 25% (Berghofer et al, 2001;Brunero et al, 2009;Cleary et al, 2009;Gebhardt et al, 2013;Kelstrup et al, 1993;Middelboe et al, 2001;Prince, 2006;Ruggeri et al, 2003;Soergaard et al, 2008), seven scored 50% (Alexius et al, 2000;Barker et al, 1996;Boydell et al, 2012;Gigantesco et al, 2002;Gjerden, 1997;Howard et al, 2003;Smith et al, 2014;Zendjidjian et al, 2014) and three scored 75% (Kuosmanen et al, 2006;Olusina et al, 2002;Zahid et al, 2010).…”