Background About one in five patients with depression experiences a chronic course. Despite the great burden associated with this disease, there is no current screening instrument for Persistent Depressive Disorder (PDD). In the present study, we examine a short screening test, the persistent depression screener (PDS), that we developed for DSM-5 PDD. The PDS is comprised of one question that is administered following an initial self-assessment for depression. Methods Ninety patients from an inpatient clinic/day clinic specialized in treating depression completed the PDS. They were also assessed using a structured clinical interview covering the DSM-5 criteria for PDD. Retest reliability was examined after two weeks ( n = 69, 77%). Results In this sample, the prevalence of PDD was 64%. Sensitivity of the PDS was 85% with a positive predictive value of 80%. Specificity was 63%. Positive and negative likelihood ratios were 2.3 and .24, respectively. Agreement between the PDS results and the outcome of the clinical interview was moderate ( Cohen’s Kappa κ = .48 ([95%-CI .28, .68], p < .001, SE = 0.10)). Prevalence-adjusted bias-adjusted Kappa was PABAK = .53. Retest reliability of the PDS was moderate ( Cohen’s Kappa κ = .52 ([95%-CI .3, .74], p < .001, SE = 0.11)). Conclusions The present study shows that the PDS - when applied following a self-rating depression scale - might be a valid and reliable way to detect PDD. However, the results of the PDS must be confirmed by a diagnostic interview.

Background: Interpersonal skills deficits and dysfunctional metacognitive beliefs have been implicated in the etiology and maintenance of depression. This study aimed to investigate the association between changes in these skills deficits and change in depressive symptoms over the course of treatment with Cognitive Behavioral Analysis System of Psychotherapy (CBASP) and Metacognitive Therapy (MCT).Methods: In this prospective, parallel group observational study, data was collected at baseline and after 8 weeks of an intensive day clinic psychotherapy program. Based on a shared decision between patients and clinicians, patients received either CBASP or MCT. Ninety patients were included in the analyses (CBASP: age M = 38.7, 40.5% female, MCT: age M = 44.7, 43.3% female). Interpersonal deficits were assessed with the short-form of the Luebeck Questionnaire for Recording Preoperational Thinking (LQPT-SF) and the Impact Message Inventory (IMI-R). Metacognitive beliefs were assessed with the Metacognition Questionnaire-30 (MCQ-30). The Quick Inventory of Depressive Symptomatology (QIDS-SR16) was utilized to assess depressive symptoms. A regression analysis was conducted to assess variables associated with outcome. ANCOVAs were utilized to investigate whether improvement in skills deficits is dependent on type of treatment received.Results: Improvements in preoperational thinking and increases in friendly-dominant behavior were associated with change in depressive symptoms. There was no association between reductions in dysfunctional metacognitive beliefs and a decrease in depressive symptoms. While both treatment groups showed significant improvements in interpersonal and metacognitive skills, there was no significant between-group difference in the change scores for either of these skills.Conclusion: Our findings suggest that changes in interpersonal skills seem to be of particular relevance in the treatment of depression. These results have to be replicated in a randomized-controlled design before firm conclusions can be drawn.

Background: This study explores the association of experienced dependency in psychotherapy as measured with the CDQ (Care Dependency Questionnaire) and treatment outcome in depression. Furthermore, the course of care dependency and differences in the CDQ scores depending on the received type of treatment, MCT (metacognitive therapy), or CBASP (cognitive behavioral analysis system of psychotherapy), were investigated.Methods: The study follows a prospective, parallel group observational design. Patients suffering from depression received an 8-week intensive day clinic program, which was either CBASP or MCT. The treatment decision was made by clinicians based on the presented symptomatology and with regard to the patients' preferences. The patients reported depressive symptoms with the QIDS-SR16 (Quick Inventory of Depressive Symptomatology) and levels of experienced care dependency with the German version of the CDQ on a weekly basis. Mixed-model analyses were run to account for the repeated-measures design.Results: One hundred patients were included in the analyses. Results indicate that higher levels of care dependency might predict a less favorable outcome of depressive symptomatology. Levels of care dependency as well as depressive symptoms decreased significantly over the course of treatment. There was no significant between-group difference in care dependency between the two treatment groups.Conclusion: The results suggest that care dependency might be associated with a worse treatment outcome in depressed patients. In general, care dependency seems to be a dynamic construct, as it is changing over time, while the levels of care dependency seem to be independent from the received type of treatment. Future research should continue investigating the mechanisms of care dependency in a randomized controlled design.Clinical Trial Registration:https://www.drks.de/drks_web/, identifier: DRKS00023779.

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Background: Perceived social support (PSS) is a crucial factor in physical and mental health. Previous studies found a negative association between childhood maltreatment (CM) and current PSS. Objective: In this paper, we investigate whether psychopathology moderates this association in a sample of patients with Depressive Disorder (DD) and Borderline Personality Disorder (BPD). Method: Sixty-nine patients with DD and 110 patients with BPD were recruited to inpatient/ day clinic treatment programmes for either DD or BPD. All participants completed the Childhood Trauma Questionnaire (CTQ) and the Social Support Questionnaire (F-SozU). Our hypothesis was tested with a moderator analysis in a multiple linear regression model. Results: We found a significant interaction between diagnosis and CM for the CTQ total score and the emotional abuse subscale. Post hoc analyses revealed a significant negative correlation between CM and PSS only for patients suffering from BPD and not for patients with DD. Conclusion:Our results suggest that the negative association between CM and PSS might be more pronounced in certain patient groups, particularly patients with BPD.Efecto diferencial del abuso emocional infantil en el apoyo social actual en el trastorno límite y la depresión: un estudio transversal Antecedentes: El apoyo social percibido (PSS en su sigla en inglés) es un factor crucial en la salud física y mental. Estudios previos encontraron una asociación negativa entre el maltrato infantil (MI) y el PSS actual. Objetivo: En este trabajo investigamos si la psicopatología modera esta asociación en una muestra de pacientes con trastorno depresivo (DD en su sigla en inglés) y trastorno límite de la personalidad (TLP). Método: Sesenta y nueve pacientes con DD y 110 pacientes con TLP fueron reclutados en programas de tratamiento clínico para pacientes de hospital diurno para DD o TLP. Todos los participantes completaron el cuestionario de trauma infantil (CTQ en su sigla en inglés) y el Cuestionario de apoyo social (F-SozU). Nuestra hipótesis fue probada con un análisis de moderador en un modelo de regresión lineal múltiple. Resultados: Encontramos una interacción significativa entre el diagnóstico y el MI para la puntuación total del CTQ y la subescala de abuso emocional. Los análisis post hoc revelaron una correlación negativa significativa entre MI y PSS solo para pacientes que padecían TLP y no para pacientes con DD. Conclusión: Nuestros resultados sugieren que la asociación negativa entre MI y PSS podría ser más pronunciada en ciertos grupos de pacientes, particularmente en pacientes con TLP.