What do systematic reviews say?

Decision self‐confidence: Decision self‐efficacy scale (O'Connor 1995): range 0 to 100 (none to perfect self‐efficacy) measured 12 weeks post‐intervention (McBride 2016)

Anxiety (adverse effect, post‐intervention)

Knowledge

Preparation for decision‐making

Decision self‐confidence: Decision self‐efficacy scale (O'Connor 1995): range 0 to 100 (none to perfect self‐efficacy) measured 12 weeks post‐intervention (McBride 2016)