“…The Theory of Planned Behavior (TPB) has been employed in many cancer management-related studies (Courneya et al, 2004;Di Sarra et al, 2015;Jones et al, 2005;Wade, Smith, Hankins, & Llewellyn, 2010). It is a social-cognitive model which postulates that performance of a particular behavior is determined by intention which is in turn, influenced by three constructs: attitude, subjective norm, and perceived behavioral control (PBC; Ajzen, 1991Ajzen, , 2012.…”