Key result
Type D personality prevalence after myocardial infarction fluctuated from 14.0% during hospitalization to 25.1% at 1 month and 19.2% at 12 months, demonstrating low temporal stability.
Cohort
The DS14 questionnaire demonstrates low temporal stability for classifying Type D personality in the first year following a myocardial infarction, indicating that personality classification may fluctuate during recovery.
DS14 Type D classification may be unstable post-MI; leaves open whether repeated assessments improve prognostic utility in research.
This study examined the prevalence of Type D personality and the temporal stability, internal consistency, and construct validity of the DS14 at three time points after myocardial infarction. The prevalence was 14.0% during hospitalization, 25.1% at 1 month, and 19.2% at 12 months. A total of 6.1% of the patients were classified as Type D personality at all three assessments, whereas 68.4% were stable non-Type D and 25.6% changed between personality classifications. The DS14 had stable structural validity, but low temporal stability over time, especially from hospitalization to the 1-month and 12-month follow-ups (κ = 0.365 and 0.397, respectively).
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Condén et al. (2014) conducted a cohort in Myocardial infarction. Type D personality was evaluated on Prevalence and temporal stability of Type D personality. Type D personality prevalence after myocardial infarction fluctuated from 14.0% during hospitalization to 25.1% at 1 month and 19.2% at 12 months, demonstrating low temporal stability.
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