“…In addition to the one randomised control trial (Shepherd et al, 2007) and two quasi experimental studies (Newhouse et al, 2007;Komaratat and Oumtanee, 2009), a variety of research approaches were used including: one pre and post-test design (Young et al, 2008), one nonexperimental descriptive correlation study (Vasseur, 2009), one comparative intervention study as part of an action research project (Edmond, 2004), three descriptive comparative surveys (Beecroft et al, 2001;Halfer et al, 2008;Krugman et al, 2006), two cross-sectional descriptive studies (Crimlisk et al, 2002;Setter et al, 2011), eight longitudinal studies (Altier and Krsek, 2006;Beecroft et al, 2008;Beyea et al, 2010;Roud et al, 2005;Squires, 2002;Ulrich et al, 2010;Williams et al, 2007), one mixed methods (Beyea et al, 2007) and one 6 year evaluation study (Beecroft et al, 2006), one retrospective study (Friedman et al, 2011) and eight descriptive case studies (Allanson and Fulbrook, 2010;Goode et al, 2009;Kowalski and Cross, 2010;Leigh et al, 2005;Marcum and West, 2004;Messmer et al, 2004;O'Malley Floyd et al, 2005;Owens et al, 2001). In mixed method studies only the quantitative data have been extracted, the qualitative data are not reported in this review.…”