“…Missing information was sought by contacting authors using the email addresses provided and alternative email addresses found online. There remain missing data regarding study setting (Polnay, MacLean, Lewington, & Patrick, 2015;Shanks, Pfohl, Blum, & Black, 2011), professional role of participants (Lamph et al, 2014;Lamph, Sampson, Smith, Williamson, & Guyers, 2018), use of psychological model (Commons-Treloar & Lewis, 2008;Lamph et al, 2018;Miller & Davenport, 1996), whether the intervention included a taught skills component (Davies, Sampson, Beesley, Smith, & Baldwin, 2014;Ebrahim, Robinson, Crooks, Harenwall, & Forsyth, 2016;Lamph et al, 2014), and whether videos included PPE (Keuroghlian et al, 2016;Polnay et al, 2015;Shanks et al, 2011). For one study standard deviations were not available (Ebrahim et al, 2016).…”