Background 

Insomnia symptoms have become increasingly common in patients with coronary artery disease (CAD). Increasing evidence suggests comorbidity between personality traits and health status. Considering personality traits may act as a predisposition for future illness; this state may influence sleep quality and it appears to precipitate cardiac events in high-risk patients.

Objective 

The aim of this study was to investigate self-reported sleep deficiency in relation to vicious cycle of sleeplessness (VCS) behavior, hyperarousal behavioral trait (H-personality), and type D personality traits in patients with CAD and in a population-based group. Furthermore, our aim was to explore the association of VCS behavior with H-personality trait and type D personality. Finally, we investigated to what extent type D personality can explain self-reported too little sleep in patients with CAD.

Methods 

An observational case-control design was applied comprising 859 patients in cardiac outpatient care and 859 participants from a population-based group. Questionnaires assessing VCS behavior, H-personality, type D personality, and perceptions of too little sleep were used.

Results 

Statistically significant higher scores of a hyperarousal and sleeplessness behavior were revealed for those with too little sleep compared with those with sufficient sleep in both the patient and the population-based group. Age, female gender, or sleeplessness behavior significantly predicted too little sleep (P < .001).

Conclusions 

The current study highlights the advantage of studying heterogeneity in patients with CAD from a person-centered perspective with focus to identify distressed individuals in order to prevent or treat sleep deficiency. A cluster of factors may be a more accurate predictor of patient-reported outcomes than a single psychosocial factor.

中文翻译：

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冠状动脉疾病患者睡眠与人格因素之间的关联。

背景 

失眠症状在冠状动脉疾病(CAD)患者中变得越来越普遍。越来越多的证据表明人格特征和健康状况之间存在共病。考虑到人格特征可能是未来疾病的易感因素；这种状态可能会影响睡眠质量，并且似乎会导致高危患者发生心脏事件。

客观的 

本研究的目的是调查自我报告的睡眠不足与 CAD 患者和基于人群的群体的失眠 (VCS) 行为、过度觉醒行为特征 (H-人格) 和D 型人格特征的恶性循环之间的关系。. 此外，我们的目的是探索 VCS 行为与 H 型人格特质和D 型人格的关联。最后，我们调查了D 型人格在多大程度上可以解释CAD 患者自我报告的睡眠过少。

方法 

应用了观察性病例对照设计，包括 859 名心脏门诊患者和 859 名来自人群的参与者。使用了评估 VCS 行为、H 型人格、D 型人格和睡眠过少看法的问卷。

结果 

在患者和人群中，与睡眠充足的人相比，睡眠过少的人在过度觉醒和失眠行为的统计上显着更高。年龄、女性或失眠行为显着预测睡眠过少( P < .001)。

结论 

当前的研究强调了从以人为中心的角度研究 CAD 患者异质性的优势，重点是识别陷入困境的个体，以预防或治疗睡眠不足。与单个心理社会因素相比，一组因素可能更准确地预测患者报告的结果。