Preparing patients for medical interventions: a systematic review of the psychometric qualities of published instruments

Objective: Preparing patients for medical interventions improves patient outcomes and is an ethical and legal imperative. This review examines the characteristics and psychometric properties of published instruments which assess patients' preparation for medical interventions. Methods: Medline, CINAHL, EMBASE and PsycINFO electronic databases were searched from the date of their inception to November 2015. Data-based publications describing the development or validation of a self-report instrument designed to assess the quality of adult patients' perceived preparation for a medical intervention were included. Results: Nine publications described the development or validation of seven instruments which met inclusion criteria. The psychometric qualities of the instruments varied. None met all of the accepted criteria for psychometric rigour. Although the Satisfaction with Cancer Information Profile met the highest number (n = 5) of the defined psychometric properties, the study sample size was less than 100. Overall, content validity of the included instruments was the most frequently assessed criteria. Conclusion: Few instruments have been specifically developed to assess patients' self-reported preparation for medical interventions. Of the available instruments, none demonstrated adequate rigour across essential psychometric properties. Practice Implications: The need to develop instruments examining patient preparation for medical interventions is apparent given the limitations of the instruments reviewed.