the efficacy of an instrument designed for specific self – afficacy measurment in patients with mi zand s [1] *, rafiei m [2] received: 9 apr , 2013 accepted: 15 jun , 2013 abstract background & aims : f or efficient evaluation of their beliefs in patients with heart failure, there is a need to use a tool with scientific principles of psychometrics. in our country because of the abs...
