Negative affectivity and social inhibition in cardiovascular disease: Evaluating type-D personality and its assessment using item response theory

Abstract

Negative affectivity and social inhibition in cardiovascular diseaseEmons, W.H.M.; Meijer, R.R.; Denollet, J. General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.-Users may download and print one copy of any publication from the public portal for the purpose of private study or research -You may not further distribute the material or use it for any profit-making activity or commercial gain -You may freely distribute the URL identifying the publication in the public portal Take down policy If you believe that this document breaches copyright, please contact us providing details, and we will remove access to the work immediately and investigate your claim. Abstract Objective: Individuals with increased levels of both negative affectivity (NA) and social inhibition (SI)-referred to as type-D personality-are at increased risk of adverse cardiac events. We used item response theory (IRT) to evaluate NA, SI, and type-D personality as measured by the DS14. The objectives of this study were (a) to evaluate the relative contribution of individual items to the measurement precision at the cutoff to distinguish type-D from non-type-D personality and (b) to investigate the comparability of NA, SI, and type-D constructs across the general population and clinical populations. Methods: Data from representative samples including 1316 respondents from the general population, 427 respondents diagnosed with coronary heart disease, and 732 persons suffering from hypertension were analyzed using the graded response IRT model. Results: In Study 1, the information functions obtained in the IRT analysis showed that (a) all items had highest measurement precision around the cutoff and (b) items are most informative at the higher end of the scale. In Study 2, the IRT analysis showed that measurements were fairly comparable across the general population and clinical populations. Conclusions: The DS14 adequately measures NA and SI, with highest reliability in the trait range around the cutoff. The DS14 is a valid instrument to assess and compare type-D personality across clinical groups. D

Type D Patients Report Poorer Health Status Prior to and After Cardiac Rehabilitation Compared to Non-Type D Patients

“…A previous study confirmed that it is the interaction of both traits, rather than the single traits, that incurs an increased risk of adverse health outcomes [23]. Recently, the cut-off score of ≥10 for both subscales has been confirmed as the most optimal by means of Item Response Theory in samples from the general population, CAD patients, and hypertensives [24]. Both of the DS14 subscales of Negative Affectivity and Social Inhibition have good internal consistency (Cronbach's α=0.88/0.86), are stable over a 3-month period (r=0.82/0.72), and are independent of mood and health status [22].…”

Type D personality in Poland: Validity and application of the Polish DS14

“…The DS14 comprises 14 items, contributing to two 7-item subcales, that is negative affectivity (NA; e.g., "I often feel unhappy") and social inhibition (SI; e.g., "I find to hard to start a conversation") (Denollet, 2005). Type D caseness is determined by means of a standardized cut-off ≥10, with a recent study using item-response theory showing that this is the most optimal cut-off on both subscales (Emons, Meijer & Denollet, 2007). The DS14 is a valid and reliable scale, with high internal consistency as assessed by Cronbach's alpha (NA = 0.88; SI = 0.86) and good 3-month test-retest reliability (NA: r = 0.72; SI: r = 0.82).…”

Psychological Indices as Predictors for Phantom Shocks in Implantable Cardioverter Defibrillator Recipients

“…Type D case is defined by a score of ≥10 on both subscales, 21 with this cutoff being the most optimal according to item response theory. 22 The DS14 has good psychometric properties with Cronbach's α = 0.88/0.86 and 3-month test-retest reliability = 0.72/0.82 for the negative affect and the social inhibition subscales, respectively. 21 Type D personality is not confounded by indicators of disease PACE, Vol.…”