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Trials
Published in: Trials 1/2011

Open Access 01-12-2011 | Study protocol

Investigating a training supporting shared decision making (IT'S SDM 2011): study protocol for a randomized controlled trial

Authors: Friedemann Geiger, Katrin Liethmann, Frauke Hoffmann, Jutta Paschedag, Jürgen Kasper

Published in: Trials | Issue 1/2011

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Background

Shared Decision Making (SDM) is regarded as the best practice model for the communicative challenge of decision making about treatment or diagnostic options. However, randomized controlled trials focusing the effectiveness of SDM trainings are rare and existing measures of SDM are increasingly challenged by the latest research findings. This study will 1) evaluate a new physicians' communication training regarding patient involvement in terms of SDM, 2) validate SDMMASS, a new compound measure of SDM, and 3) evaluate the effects of SDM on the perceived quality of the decision process and on the elaboration of the decision.

Methods

In a multi-center randomized controlled trial with a waiting control group, 40 physicians from 7 medical fields are enrolled. Each physician contributes a sequence of four medical consultations including a diagnostic or treatment decision.
The intervention consists of two condensed video-based individual coaching sessions (15min.) supported by a manual and a DVD. The interventions alternate with three measurement points plus follow up (6 months).
Realized patient involvement is measured using the coefficient SDMMASS drawn from the Multifocal Approach to the Sharing in SDM (MAPPIN'SDM) which includes objective involvement, involvement as perceived by the patient, and the doctor-patient concordance regarding their judges of the involvement. For validation purposes, all three components of SDMMASS are supplemented by similar measures, the OPTION observer scale, the Shared Decision Making Questionnaire (SDM-Q) and the dyadic application of the Decisional Conflict Scale (DCS). Training effects are analyzed using t-tests. Spearman correlation coefficients are used to determine convergent validities, the influence of involvement (SDMMASS) on the perceived decision quality (DCS) and on the elaboration of the decision. The latter is operationalised by the ELAB coefficient from the UP24 (Uncertainty Profile, 24 items version).

Discussion

Due to the rigorous blinded randomized controlled design, the current trial promises valid and reliable results. On the one hand, we expect this condensed time-saving training to be adopted in clinical routine more likely than previous trainings. On the other hand, the exhaustivity of the MAPPIN'SDM measurement system qualifies it as a reference measure for simpler instruments and to deepen understanding of decision-making processes.

Trial registration

Current Controlled Trials ISRCTN78716079
Appendix
Available only for authorised users
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Metadata
Title
Investigating a training supporting shared decision making (IT'S SDM 2011): study protocol for a randomized controlled trial
Authors
Friedemann Geiger
Katrin Liethmann
Frauke Hoffmann
Jutta Paschedag
Jürgen Kasper
Publication date
01-12-2011
Publisher
BioMed Central
Published in
Trials / Issue 1/2011
Electronic ISSN: 1745-6215
DOI
https://doi.org/10.1186/1745-6215-12-232

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