“…Among the 75 studies that used purposive sampling, 47 (62.7%) did not specify the type of purposive sampling. Nonetheless, 15 used maximum variation (Chetty et al, 2016;Chiwaridzo et al, 2019a, b;Diameta et al, 2018;Dizon et al, 2016Dizon et al, , 2017Hanass, Hancock, Myezwa, Nixon, and Gibbs, 2015;Kambole and Struthers, 2009;Maddocks et al, 2018;Maddocks et al, 2020;Rowe, 2015;Urimubenshi and Rhoda, 2011;Visagie and Swartz, 2016), seven used criterion sampling (Akinrolie, Okoh, and Kalu, 2020; Igwesi-Chidobe, Sorinola, Kitchen and Godfrey, 2018a; Khondowe Rhoda, and Mpofu, 2007;Meyer, Louw, and Ernstze, 2019;Mweshi and Mpofu, 2001;Schmutz, Meyer, and Archer, 2019;Seymour, Geiger, and Scheffler, 2019), two used random purposive (Ernstzen and Bitzer, 2012;Ernstzen, Bitzer, and Grimmer-Somers, 2010), while one each used study multi-stage (Stander, Grimmer, and Brink, 2019), cluster purposive (Lowu et al, 2018), theoretical sampling (Shead, Roos, Olivier, and Ihunwo, 2019) and criterion based and extreme/deviant case sampling .…”