Johannes A. C. Laferton

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In coronary heart disease (CHD) and heart surgery, there is sound evidence for the relationship between patients' expectations and treatment outcome, especially for outcome variables such as disability and quality of life. In addition, patients' expectations have been shown to be modifiable through psychological interventions. Therefore, targeting patients'(More)
BACKGROUND Several studies indicate that patients' presurgical expectations can influence postsurgical health outcome. PURPOSE To estimate the potential for clinical exploitation of this association, a meta-analysis of prospective studies which assess the association between patients' presurgical expectations and postsurgical quality of life is applied to(More)
Patients' expectations have shown to be a major psychological predictor of health outcome in cardiac surgery patients. However, it is unclear whether patients' expectations can be optimized prior to surgery. This study evaluates the development of a brief psychological intervention focusing on the optimization of expectations and its effect on change in(More)
OBJECTIVE This randomized controlled trial evaluated the efficacy of an Internet-based intervention, which aimed to improve recovery from work-related strain in teachers with sleeping problems and work-related rumination. In addition, mechanisms of change were also investigated. METHODS A sample of 128 teachers with elevated symptoms of insomnia (Insomnia(More)
BACKGROUND Heart surgery patients' expectations have been shown to be related to surgery outcome, independent of medical status. However, it is unclear which factors determine patients' expectations about disability following heart surgery. PURPOSE Investigating the associations of patients' disability expectations with demographic, medical, and(More)
BACKGROUND Almost nothing is known about the potential negative effects of Internet-based psychological treatments for depression. This study aims at investigating deterioration and its moderators within randomized trials on Internet-based guided self-help for adult depression, using an individual patient data meta-analyses (IPDMA) approach. METHOD(More)
BACKGROUND Placebo effects contribute substantially to outcome in most fields of medicine. While clinical trials typically try to control or minimize these effects, the potential of placebo mechanisms to improve outcome is rarely used. Patient expectations about treatment efficacy and outcome are major mechanisms that contribute to these placebo effects. We(More)
BACKGROUND Though the phenotype of anxiety about medical illness has long been recognized, there continues to be debate as to whether it is a distinct psychiatric disorder and, if so, to which diagnostic category it belongs. OBJECTIVE Our objective was to investigate the pattern of psychiatric comorbidity in hypochondriasis (HC) and to assess the(More)
BACKGROUND Among cardiac patients, positive psychologic factors are consistently linked with superior clinical outcomes and improvement in key markers of inflammation and hypothalamic-pituitary-adrenal axis functioning. Further, positive psychology interventions (PPI) have effectively increased psychologic well-being in a wide variety of populations.(More)
OBJECTIVE The aim of the study was to examine whether preoperative psychological interventions targeting patients' expectations are capable of influencing the biological stress response after coronary artery bypass graft (CABG) surgery and could thus improve recovery after heart surgery. METHODS Randomized controlled trial with assessments 10 days before(More)