“…Theories from behavioural science have enabled us to understand some of the factors that may affect participation generally, such as individuals’ attitudes, perceived barriers, perceived risks and social norms (Ajzen, 1991; Rosenstock, 1966). Furthermore, The Preventative Health Model (PHM; Myers et al, 1994) posits a range of factors that may affect decision making about taking preventative action, such as background factors (i.e., demographic characteristics, medical history, past health behaviour), representation factors (i.e., severity of health condition, susceptibility, curability, worry, salience and coherence), social influence factors (i.e., the clinician-patient relationship, social norms, health locus of control) and program factors (i.e., promotional communications).…”