“…Most studies also used convenience sampling (Alamis, 2010, Agnello et al, 2011, Atmaca, 2016, Ball et al, 2009, Bourgault et al, 2013, Budge, 2011, Cakiroglu et al, 2017, Chung, 2015, Crews and Wilkinson, 2010, Race and Williams, 2018, Perera et al, 2008, Siow, 2015, Burns and Foo, 2014 and the majority did not disclose the relationship between the researcher and the study participants (Alamis, 2010, Agnello et al, 2011, Atmaca, 2016, Ball et al, 2009, Budge, 2011, Cakiroglu et al, 2017, Chung, 2015, Crews and Wilkinson, 2010, Douglas et al, 2016, Race and Williams, 2018, Perera et al, 2008, Shellenbarger et al, 2018, Burns and Foo, 2014.…”