Objective:

To validate the Shared Decision Making Questionnaire - physician version (SDM-Q- Doc) in Spanish.

Design:

Cross-sectional, multicenter, clinimetric validation study.

Setting:

Primary Care Units.

Participants:

In the cross-cultural adaptation phase there were 31 family doctors, and in the validation phase there were 219, all active medical professionals at the institutional and / or private level

Main measures:

Cross-cultural adaptation (direct translation, synthesis and reconciliation of the version by an expert committee, reverse translation, reconciliation of the reverse translation with authors of the original questionnaire, comprehension analysis in a sample of patients) and psychometric aspects (reliability and validity).

Results:

Cross-cultural adaptation was performed, guide question 2 was homologated to SDM-Q-9. No negative values were observed in the corrected item-total correlation- with the total correlation; all are higher than 0.80. Cronbach's Alpha was 0.963. Item 1 explained a variance of 77.2%. The Kaiser-Meyer-Olkin (KMO) test was 0.924 with a statistically significant Barlett Sphericity. Pearson's correlation matrix shows a positive correlation; in general the inter-item relationship is greater than 0.606.

Conclusions:

A useful, short and accessible questionnaire to be applied in Primary Care has been validated to measure shared decision-making from the physician's perspective.

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