“…The interventions tended to be complex, including multimodal elements for example physiological rehabilitation, exercise or medication management, in addition to psychological components. The psychological components of interventions often contained multiple components that drew explicitly upon approaches such as cognitive behavioural therapy (CBT) (30% of studies) (Angst et al, 2014 ; Asih, Neblett, Mayer, & Gatchel, 2018 ; Bergström, Jensen, Hagberg, Busch, & Bergstrom, 2012 ; Busch, Bodin, Bergstrom, & Jensen, 2011 ; Campello et al, 2012 ; Coole, Drummond, & Watson, 2013 ; Harris et al, 2017 ; Hartzell, Mayer, & Asih, 2014 ; Ibrahim, Weber, Courvoisier, & Genevay, 2019 ; Irvine et al, 2015 ; Johansen et al, 2019 ; Jorgensen et al, 2011 ; Lambeek et al, 2010 ; Linton et al, 2016 ; Luthi et al, 2018 ; Marchand et al, 2015 ; Mayer, Choi, Howard, & Gatchel, 2013 ; Mochari-Greenberger, Andreopoulos, Peters, & Pande, 2020 ; Myhre et al, 2014 ; Pato et al, 2010 ; Poulain et al, 2010 ; Rasmussen et al, 2016 ; Reme et al, 2016 ; Sander et al, 2020 ; Schlicker et al, 2020 ; Stein & Miclescu, 2013 ; Vindholmen, Hoigaard, & Haugen, 2016 ), counselling (8% of studies) (Calner et al, 2017 ; Ernsen & Lellefjell, 2014; Howard, Mayer, & Gatchel, 2012 ; Jensen et al, 2012b ; Knappe, Briest, & Bethge, 2015; Kold, Hansen, Vedsted-Hansen, & Forman, 2012 ; Sjöström, Asplund, & Alricsson, 2013 ), acceptance and commitment therapy (4% of studies) (Berglund et al, 2018 ; Gismervik et al, 2020 ; Hara, Bjørngaard, Brage et al, 2018 ; Hara, Bjørngaard, Jacobsen et al, 2018 ), motivational interviewing (2% of studies) (Gross et al, 2017 ; Park et al, 2018 ) or mindfulness-based stress reduction (1% of studies) (Soler-Font et al, 2019 ). Other interventions adopted explicit educational approaches (27.5% of studies) (Andersen et al, 2015...…”