Biomedical subjects

A Vodermaier

Publications and source records attributed to A Vodermaier.

3 recordsLinked to original sources

PubMed2006

Development and first validation of the shared decision-making questionnaire (SDM-Q).

OBJECTIVE: Due to a lack of valid German instruments measuring shared decision-making (SDM), a theory-driven questionnaire (SDM-Q) to measure the process of SDM was developed and validated. METHODS: As a theoretical basis steps of the SDM process were defined in an expert panel. Item formulation was then conducted according to the Delphi method. For the first validation on a mixed sample Rasch analysis was used to eliminate items not fitting the construct thus receiving a unidimensional scale. RESULTS: After eliminating 4 items the remaining 11 form a unidimensional scale with an acceptable reliability for person measures (0.77) and very good reliability for item difficulties (0.95). Analysis of subgroups revealed a different use of items in different conditions. Furthermore the scale showed high ceiling effects. CONCLUSION: A new theory-driven instrument to measure the process of SDM has been developed and validated by use of a rigorous method revealing first promising results. Yet the ceiling effects require the addition of more discriminating items, and the different use of items in different conditions demands an in depth analysis. PRACTICE IMPLICATIONS: While the concept of SDM is constantly receiving more attention in medical practice, its valid and reliable measurement remains challenging.

Decision Making↗

PubMed2004

[Development and validation of assessment instruments for shared decision making].

The German Ministry for Health and Social Security is funding ten projects to introduce shared decision making into clinical practice. The medical problems the projects are focussing on were chosen from among various diseases (e. g. depression, multiple sclerosis, cancer). The ten projects achieved consensus on a core set of instruments for the measurement of process and outcome of the shared decision making. Instruments developed in German-speaking countries are currently not available. Thus, linguistic and cultural validation had to be performed for the core set instruments. The results of the data analysis as well as patient interviews demonstrate the need for improving these instruments. Therefore, the members of the methodological working group concentrated on the integration of these results in a new instrument. In a first step the construct of "shared decision making" was defined, followed by a definition of the process elements characterising shared decision making. Thereafter, items were developed on the basis of the process elements. The new instrument will now be validated for different diseases.

Decision Making↗

PubMed2003

[Shared decision making in breast cancer patients--qualitative study on mutual decision making in breast cancer in a university hospital].

This qualitative study examines doctor-patient interactions and interviews with breast cancer patients referring to shared decision making. The interviews have been evaluated according to the method of grounded theory. Videos of doctor-patient interactions show information and discussions on therapy planning. Breast cancer is a serious, in many cases life-threatening disease. The primary therapy is characterised by confrontation with the diagnosis, fear and hope of the patients and the subsequent treatment. Central themes of the article are the context and implicit assumptions of doctors influencing the shared decision making approach.

Adaptation, Psychological↗