“…Thirty-one of the interventions included in this study were informed by theory with twenty-two of these reporting positive behavioural outcomes (Andrade et al, 2018;Bopp et al, 2018;Cates et al, 2014;Cates et al, 2018;Dietrich et al, 2019;Evans et al, 2016;Garbers et al, 2016;Gilbert et al, 2019;Glassman et al, 2018;John et al, 2017;Jones et al, 2018;Loh et al, 2018;Plant et al, 2020;Rundle-Thiele et al, 2015;Russell-Bennett et al, 2016;Saleme et al, 2020;Sanders et al, 2019;Shah et al, 2020;Solorio et al, 2016;Tait et al, 2019;Yam et al, 2017). Social cognitive theory was used in 11 interventions (Bopp et al, 2018;Dietrich et al, 2019;Frerichs et al, 2015;Loh et al, 2018;Paul et al, 2018;Russell-Bennett et al, 2016;Saleme et al, 2020;Sanders et al, 2019;Tobey et al, 2016;Whiteley et al, 2020;Willoughby, 2015). The health belief model was used in 6 interventions (Cates et al, 2014;Cates et al, 2018;Evans et al, 2016;Garbers et al, 2016;Glassman et al, 2018;Plant et al, 2020).…”