“…The study findings are also summarized in the tables including whether a significant effect of the intervention(s) on self-efficacy and any behavioural outcome was reported. Attempts were made to contact the authors directly of eight studies in which important information was missing or unclear (Dijkstra & de Vries, 2001;Dijkstra, de Vries, & Roijackers, 1998;Finney, Noyes, Coutts, & Moos, 1998;Goldberg et al, 2000;Johnson, Budz, Mackay, & Miller, 1999;Kominars, 1997;Winkleby, Feighery, Altman, Kole, & Tencati, 2001;Yen, Wu, Yen, & Ko, 2004). Three responded with data (Finney et al, 1998;Johnson et al, 1999;Yen et al, 2004).…”