Development and Evaluation of the Shared Decision Making Process Scale: A Short Patient-Reported Measure

K. D. Valentine, Ha Vo, Floyd J. Fowler, Suzanne Brodney, Michael J. Barry and Karen R. Sepucha
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K. D. Valentine: Division of General Internal Medicine, Massachusetts General Hospital, Boston, MA, USA
Ha Vo: Division of General Internal Medicine, Massachusetts General Hospital, Boston, MA, USA
Floyd J. Fowler: Center for Survey Research, University of Massachusetts, Boston, Boston, MA, USA
Suzanne Brodney: Division of General Internal Medicine, Massachusetts General Hospital, Boston, MA, USA
Michael J. Barry: Division of General Internal Medicine, Massachusetts General Hospital, Boston, MA, USA
Karen R. Sepucha: Division of General Internal Medicine, Massachusetts General Hospital, Boston, MA, USA

Medical Decision Making, 2021, vol. 41, issue 2, 108-119

Abstract: Background The Shared Decision Making (SDM) Process scale is a short patient-reported measure of the amount of SDM that occurs around a medical decision. SDM Process items have been used previously in studies of surgical decision making and exhibited discriminant and construct validity. Method Secondary data analysis was conducted across 8 studies of 11 surgical conditions with 3965 responses. Each study contained SDM Process items that assessed the discussion of options, pros and cons, and preferences. Item wording, content, and number of items varied, as did inclusion of measures assessing decision quality, decisional conflict (SURE scale), and regret. Several approaches for scoring, weighting, and the number of items were compared to identify an optimal approach. Optimal SDM Process scores were compared with measures of decision quality, conflict, and regret to examine construct validity; meta-analysis generated summary results. Results Although all versions of the scale were highly correlated, a short, partial credit, equally weighted version of the scale showed favorable properties. Overall, higher SDM Process scores were related to higher decision quality ( d = 0.18, P = 0.029), higher SURE scale scores ( d = 0.57, P

Keywords: patient-reported measure; shared decision making; validity (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:sae:medema:v:41:y:2021:i:2:p:108-119

DOI: 10.1177/0272989X20977878

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