“…Most of the studies were done in high-income countries, most in the USA or Canada (Bakshi et al., 2015 ; Boutain, 2008 ; Crawford et al., 2017 ; Dharamsi et al., 2010 ; Flatt-Fultz & Phillips, 2012 ; Gonzalez et al., 2015 , 2020 ; Jindal et al., 2022 ; Knaak, 2018 ; Lax et al., 2019 ; Sukhera et al., 2020 ; Tucker et al., 2020 ; White-Davis et al., 2018 ; Zäske et al., 2014 ). Four studies included data from middle and low-income countries (Ezedinachi et al., 2002 ; Geibel et al., 2017 ; Potts et al., 2022 ; Uys et al., 2009 ) In terms of participants, 24 studies focused on healthcare students, be that nursing or medicine, describing programs added to teaching curriculums at universities (Allen et al., 2013 ; Bakshi et al., 2015 ; Boutain, 2008 ; Burdett et al., 2010 ; Crawford et al., 2017 ; DallaPiazza et al., 2018 ; DeLashmutt & Rankin, 2005 ; Dharamsi et al., 2010 ; Gonzalez et al., 2015 , 2020 ; İnan et al., 2019 ; Jones, 2000 ; Jindal et al., 2022 ; Lax et al., 2019 ; Mason & Miller, 2006 ; McAllister, 2008 ; O Carroll & O’Reilly, 2019 ; Potts et al., 2022 ; Shah et al., 2014 ; Sheely-Moore & Kooyman, 2011 ; Tucker et al., 2020 ; Üstün & İnan, 2018 ; Wagaman et al., 2019 ; Werkmeister Rozas & Garran, 2016 ). A small proportion of studies focused on participants with work experience, such as therapists or specialist mental healthcare staff (Ezedinachi et al., 2002 ; Fisher et al., 2017 ; Fisher-Borne, 2009 ; Flatt-Fultz & Phillips, 2012 ; Knaak, 2018 ; Li et al., 2015 , 2013 ; Nelso...…”