“…The 39 studies pursued very different aims, which were categorised as follows: (a) public involvement in the design and/or planning of health services (Carlisle et al., 2018; Clark, 1997; Crowley et al., 2002; Farmer & Nimegeer, 2014; Green et al., 2004; Katzburg et al., 2009; Khodyakov et al., 2014; Lee et al., 2009; Myers et al., 2020; Nimegeer et al., 2016; Twible, 1992; Valaitis et al., 2019; Woods, 2009), (b) public involvement in the development of existing or new health services (Díez et al., 2018; Jeffery & Ervin, 2011; Katzburg et al., 2009; LaNoue et al., 2016; Lazenbatt et al., 2001; Munoz, 2013; Muurinen, 2019; Nancarrow et al., 2004; Owens et al., 2010; Rains & Ray, 1995; Risisky et al., 2008; Rosén, 2006; Rowa‐Dewar et al., 2008; Seim & Slettebø, 2011; Timotijevic & Raats, 2007; Uding et al., 2009; Winter et al., 2016; Yankeelov et al., 2019), (c) evaluation of one or several public involvement methods (Carlisle et al., 2018; Goold et al., 2005; Khodyakov et al., 2014; Lamb et al., 2014; Lee et al., 2009; Serapioni & Duxbury, 2012; Timotijevic & Raats, 2007), or (d) descriptions of the application of public involvement methods (Morain et al., 2017; Velonis et al., 2018; Wainwright et al., 2014; Wang, 2006).…”