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  • Title: Psychometric properties of the Type D scale (DS14) in Norwegian cardiac patients.
    Author: Bergvik S, Sørlie T, Wynn R, Sexton H.
    Journal: Scand J Psychol; 2010 Aug; 51(4):334-40. PubMed ID: 20102545.
    Abstract:
    The combination of negative affectivity (NA) and social inhibition (SI) - the Type D Personality - is associated with poor outcomes in coronary artery disease (CAD) patients. A Norwegian translation of the standard instrument measuring Type D (DS14) was tested on 432 CAD patients receiving coronary revascularization treatment. Factor analysis produced two factors with high inter-item reliability, indicating that the Norwegian DS14 has acceptable psychometric properties. Eighteen percent were classified as Type D, lower than has been reported elsewhere. Type D was associated with anxiety, depression, and passive coping. NA correlated positively with depression, anxiety, and passive coping. SI correlated positively with depression and anxiety, and negatively with active coping. The prevalence of Type D was higher among women, and negatively correlated with time since treatment. The variation in Type D prevalence among studies needs further elucidation as does the predictive power of continuous scoring of the Type D trait.
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