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Accurate and precise monitoring of kidney function is critical for a timely and reliable diagnosis of chronic kidney disease (CKD). The determination of kidney function usually involves the estimation of the glomerular filtration rate (eGFR). We recently reported the clinical performance of a new eGFR equation (GFRNMR) based on the nuclear magnetic resonance (NMR) measurement of serum myo-inositol, valine, and creatinine, in addition to the immunoturbidometric quantification of serum cystatin C, age and sex. We now describe the analytical performance evaluation of GFRNMR according to the Clinical and Laboratory Standards Institute guidelines. Within-laboratory coefficients of variation (CV%) of the GFRNMR equation did not exceed 4.3%, with a maximum CV% for repeatability of 3.7%. Between-site reproducibility (three sites) demonstrated a maximum CV% of 5.9%. GFRNMR stability was demonstrated for sera stored for up to 8 days at 2–10°C and for NMR samples stored for up to 10 days in the NMR device at 6 ± 2°C. Substance interference was limited to 4/40 (10.0%) of the investigated substances, resulting in an underestimated GFRNMR (for glucose and metformin) or a loss of results (for naproxen and ribavirin) for concentrations twice as high as usual clinical doses. The analytical performances of GFRNMR, combined with its previously reported clinical performance, support the potential integration of this NMR method into clinical practice. [ABSTRACT FROM AUTHOR]

Background: Previous work on gene‐environment (GxE) interplay concerning anxiety has focused on the interaction of 5‐HTTLPR with childhood adversities or traumatic events whereas the impact of recent stressors is understudied, as is the integration of resilience. The current study aimed to investigate the interactive effect of 5‐HTTLPR and recent stress on anxiety in adolescents considering resilience as buffer of a GxE risk constellation. Method: In a random population‐based sample of 14–21 years old from Dresden, Germany, (N = 1180; genotyped = 942) recent stress (Daily Hassles [DH] Scale, Perceived Stress Scale, Screening Scale of the Trier Inventory for the Assessment of Chronic Stress), resilience (Connor–Davidson resilience scale) and anxiety (Patient Reported Outcome Measurement Information System Anxiety Short Form) were assessed via questionnaire in 2015 or 2016. Results: Fractional regression models revealed that resilience interacted with recent stress in form of DH as well as recent chronic stress and 5‐HTTLPR regarding anxiety. Participants carrying the more active LALA genotype reported consistently higher levels of anxiety when experiencing more DH or more recent chronic stress and having low levels of resilience. When the resilience scores were high, LALA carriers reported the lowest anxiety scores despite DH or recent chronic stress. Conclusion: Findings revealed an interactive relationship between 5‐HTTLPR genotype and recent stress suggesting resilience to function as an additional dimension buffering the impact of a GxE risk constellation. Early interventions to build resilience may be useful to prevent an escalation of distress and associated unfavorable health outcomes. [ABSTRACT FROM AUTHOR]

Objectives: The Behavior and Mind Health (BeMIND) study is a population‐based cohort study of adolescents and young adults from Dresden, Germany. The aim is to investigate psychological and behavioral factors linked to a range of mental disorders and health behaviors and their interaction with social‐environmental and genetic/biologic factors. Methods: A random sample of 14–21 year olds was drawn from the population registry in 2015. The baseline investigation was completed 11/2015–12/2016 (N = 1,180). Assessments include standardized diagnostic interview, cognitive‐affective tasks, questionnaires, biosamples, and ecologic momentary assessment in real life with combined actigraphic/geographic monitoring. In the family study component, parents completed similar assessments and provided information on child's early development. Results: The participation rate (minimum response proportion) was 21.7%; the cooperation rate was 43.4%. Acceptance and completion of study components were high. General health data indicate that more than 80% reported no or only mild impairment due to mental or somatic health problems in the past year; about 20% ever sought treatment for mental health problems or chronic somatic illnesses, respectively. Conclusions: Data from BeMIND baseline and follow‐up investigations will provide novel insights into contributors to health and disease as adolescents grow into adulthood. [ABSTRACT FROM AUTHOR]

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We establish consistent estimators of jump positions and jump altitudes of a multi-level step function that is the best L²-approximation of a probability density function f. If f itself is a step-function the number of jumps may be unknown. [ABSTRACT FROM AUTHOR]

The ICD-11 includes a new definition of adjustment disorder (AjD). The present study aimed to examine interrater reliability, internal consistency, and construct validity of a new diagnostic interview module to assess ICD-11 AjD. Data from two studies that used a standardized diagnostic interview assessment (i.e., DIA-X/M-CIDI and updated DIA-X-5) were used. For interrater reliability, agreement indicators (i.e., κ) were calculated using data from the DIA-X-5 test-retest study (N = 60). To examine internal consistency and construct validity, Cronbach's alpha values and the Kuder-Richardson correlation coefficient were computed along with confirmatory factor and latent class analyses (LCA), using data from the Zurich Adjustment Disorder Study (N = 330). Interrater reliability analyses found an adjusted kappa of 0.807 for the ICD-11 AjD diagnosis. Few items from the impairment criterion of the diagnostic algorithm performed poorly. The internal consistency was acceptable, Cronbach's αs = .43-.80; the lower-bound estimate resulted from the two-item preoccupation symptom pattern. However, both items were significantly associated, OR = 3.14, 95% CI [1.97, 4.99]. Regarding LCA results, a two-class model was favored. We found that 94.3% of all ICD-11 AjD cases belonged to Class 2, OR = 23.69, 95% CI [7.15, 79.54], which was associated with subjectively rated distress, OR = 2.18, 95% CI [1.57, 3.02], and the external measure of the Brief Symptom Inventory global severity index, OR = 2.18, 95% CI [1.57, 3.02]. Overall, the new AjD interview module provided a reliable, valid assessment of the ICD-11 diagnosis; confirmation by other studies is needed., (© 2020 International Society for Traumatic Stress Studies.)

Simple guideline-oriented supportive tools in primary care: Effects on adherence to the S3/NV guideline unipolar depression Objectives: Does the provision of supportive tools improve guideline-oriented recognition and treatment of patients with depression in primary care?, Methods: In a nested intervention study, as part of a larger epidemiological study program in German primary care, 46 randomly drawn practices received tools to facilitate identification and treatment decisions.Pre-post effects were compared to 42 matched control practices without intervention., Results: The proportion of correctly identified depression cases was similar in the intervention (47.2%) and the control group (42.3%, p = 0.537). Compared to controls, practitioners in the intervention group rated their competence in case identification and treatment at post-intervention more positively (p = 0.016). No effects were observed regarding the usage of the tools, practitioners' attitudes towards national depression guidelines, and depression treatment procedures., Conclusions: Since provision of guideline-oriented tools did not improve recognition and quality of treatment, delineation of alternative strategies for enhanced guideline adherence in primary care for depression is warranted.

Background: Primary care physicians (PCPs) play a crucial role for guideline-oriented intervention in patients with depression., Objectives: Based on a diagnostic screening questionnaire, this study investigates the sensitivity of PCPs to recognize patients with depression as well as the factors facilitating recognition and concordant diagnostic decisions., Method: In a cross-sectional epidemiological study in six regions of Germany, 3563 unselected patients filled in questionnaires on mental and physical complaints and were diagnostically evaluated by their PCP (N = 253). The patient reports on an established Depression-Screening-Questionnaire (DSQ), which allows the approximate derivation of an ICD-10 depression diagnosis, were compared with the physician diagnosis (N = 3211). In a subsample of discordant cases a comprehensive standardized clinical-diagnostic interview (DIA-X/CIDI) was applied., Results: On the study day, the prevalence of ICD-10 depression was 14.3% according to the DSQ and 10.7% according to the physician diagnosis. Half of the patients identified by DSQ were diagnosed with depression by their physician and two thirds were recognized as mental disorder cases. More severe depression symptomatology and the persistent presence of main depression symptoms were related to better recognition and concordant diagnostic decisions. Diagnostic validation interviews confirmed the DSQ diagnosis in the majority of the false-negative cases. Indications for at least a previous history of depression were found in up to 70% of false-positive cases., Conclusion: Given the high prevalence of depression in primary care patients, there is continued need to improve the recognition and diagnosis of these patients to assure guideline-oriented treatment.