|Year : 2019 | Volume
| Issue : 6 | Page : 572-577
Factor structure and validity of Type D personality scale among Indian (Tamil-speaking) patients with acute myocardial infarction
Vikas Menon1, Anoop G Pillai1, Santhosh Satheesh2, Charanya Kaliamoorthy1, Siddharth Sarkar3
1 Department of Psychiatry, JIPMER, Puducherry, India
2 Department of Cardiology, JIPMER, Puducherry, India
3 Department of Psychiatry and National Drug Dependence Treatment Center (NDDTC), AIIMS, New Delhi, India
Background: Type D personality has been linked to negative outcomes following acute myocardial infarction (AMI). Our objective was to determine the factor structure, reliability, and validity of the Type D personality construct among people with AMI in the Indian clinical setting.
Materials and Methods: In a cross-sectional study conducted between August 2016 and July 2017, 200 consecutive patients with AMI admitted to a tertiary care center completed the Tamil version of the Type D scale-14 (DS-14). The Eysenck Personality Questionnaire Revised-Short Form (EPQR-S) was also administered to check the convergent/divergent validity.
Results: The prevalence of Type D personality was 24%. Results of the principal components analysis revealed a four-factor solution for the Tamil version of the DS-14 which explained more than 75% of the variability. Strong convergent validity with the neuroticism subscale of EPQR-S (r = 0.84, P < 0.001) and divergent validity with the extraversion subscale (r = −0.75, P < 0.001) was noted. The two subscales of the Type D scale, negative affectivity and social inhibition (SI), demonstrated good reliability (Cronbach's alpha of 0.85 and 0.76, respectively). Dropping item no 14 from the DS-14 led to significant increase in internal consistency (Cronbach's alpha 0.81) for the SI subconstruct.
Conclusion: Among an Indian Tamil-speaking clinical sample of patients with AMI, Type D is a valid construct and can be assessed using the regional version of the DS-14 which showed a four-factor structure and good psychometric properties. Item no. 14 of the DS-14 scale may need modification for the Indian setting.
Dr. Vikas Menon
Department of Psychiatry, JIPMER, Puducherry
Source of Support: None, Conflict of Interest: None
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