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Reliability and validity of the German version of the OPTION scale - Zurich Open Repository and Archive


Hirsch, Oliver; Keller, Heidemarie; Müller-Engelmann, Meike; Heinzel Gutenbrunner, Monika; Krones, Tanja; Donner-Banzhoff, Norbert (2012). Reliability and validity of the German version of the OPTION scale. Health Expectations, 15(4):379-388.

Abstract

Objective:  To examine the psychometric properties of the German version of the ‘observing patient involvement’ scale (OPTION) by analysing video recordings of primary care consultations dealing with counselling in cardiovascular prevention.
Design: Cross-sectional assessment of physician–patient interaction by two rater pairs and two experts in shared decision making (SDM).
Setting: Primary care.
Participants: Fifteen general practitioners provided 40 videographed consultations.
Measurements: Video ratings using the OPTION instrument.
Results: Mean differences on item level between the four raters were quite large. Most items were skewed towards minimal levels of shared decision making. Measures of inter-rater association showed low to moderate associations on item level and high associations on total score level. Cronbach-α of the whole scale based on the data of all four raters is 0.90 and therefore on a high level. An oblique factor analysis revealed two factors, but both factors were highly correlated so we can confirm a one-dimensional structure of the instrument. ROC analyses between the rater total scores and dichotomized expert ratings (SDM yes/no) revealed a good discriminability of the OPTION total score. Physicians with more expertise in shared decision making received higher OPTION ratings.
Conclusions:  The German version of the OPTION scale is reliable at total score level. Some items need further revision in the direction of more concrete, observable behaviour. We were only able to perform a quasi-validation of the scale. Validity issues need further research efforts.

Abstract

Objective:  To examine the psychometric properties of the German version of the ‘observing patient involvement’ scale (OPTION) by analysing video recordings of primary care consultations dealing with counselling in cardiovascular prevention.
Design: Cross-sectional assessment of physician–patient interaction by two rater pairs and two experts in shared decision making (SDM).
Setting: Primary care.
Participants: Fifteen general practitioners provided 40 videographed consultations.
Measurements: Video ratings using the OPTION instrument.
Results: Mean differences on item level between the four raters were quite large. Most items were skewed towards minimal levels of shared decision making. Measures of inter-rater association showed low to moderate associations on item level and high associations on total score level. Cronbach-α of the whole scale based on the data of all four raters is 0.90 and therefore on a high level. An oblique factor analysis revealed two factors, but both factors were highly correlated so we can confirm a one-dimensional structure of the instrument. ROC analyses between the rater total scores and dichotomized expert ratings (SDM yes/no) revealed a good discriminability of the OPTION total score. Physicians with more expertise in shared decision making received higher OPTION ratings.
Conclusions:  The German version of the OPTION scale is reliable at total score level. Some items need further revision in the direction of more concrete, observable behaviour. We were only able to perform a quasi-validation of the scale. Validity issues need further research efforts.

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7 citations in Web of Science®
9 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Biomedical Ethics and History of Medicine
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:December 2012
Deposited On:11 Feb 2013 16:06
Last Modified:05 Apr 2016 15:26
Publisher:Wiley-Blackwell Publishing Ltd.
ISSN:1369-6513
Publisher DOI:https://doi.org/10.1111/j.1369-7625.2011.00689.x
PubMed ID:21521432

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