“…The involvement of patients in making decisions about their own care may contribute to medical care that is in harmony with patients' wants and needs, and may perhaps improve health outcomes. Patients who perceive that they have decisional control in treatment decision-making may regain a sense of control and mastery over their disease or treatment (Morris and Royle, 1988;Hack et al, 1994;Street and Voigt, 1997;Deadman et al, 2001), which may ultimately lead to a higher quality of life (QoL) (Morris and Royle, 1988;Street and Voigt, 1997;Deadman et al, 2001;Polsky et al, 2002;Mandelblatt et al, 2003). For example, Polsky et al (2002) observed that patients who believed they had had a choice of surgical treatment for breast cancer reported higher QoL scores by means of a Visual Analogue Scale at 5 months following surgery, than did patients who perceived themselves to have had no control over the decision.…”