911 results match your criteria: "Institute of Medical Biometry and Statistics.[Affiliation]"

Background: Cross-sectional relationships between psychosocial resilience factors (RFs) and resilience, operationalized as the outcome of low mental health reactivity to stressor exposure (low "stressor reactivity" [SR]), were reported during the first wave of the COVID-19 pandemic in 2020.

Objective: Extending these findings, we here examined prospective relationships and weekly dynamics between the same RFs and SR in a longitudinal sample during the aftermath of the first wave in several European countries.

Methods: Over 5 weeks of app-based assessments, participants reported weekly stressor exposure, mental health problems, RFs, and demographic data in 1 of 6 different languages.

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The challenges of research data management in cardiovascular science: a DGK and DZHK position paper-executive summary.

Clin Res Cardiol

May 2024

Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg-Bad Krozingen, University of Freiburg, Freiburg, Germany.

Article Synopsis
  • Sharing and documenting cardiovascular research data is crucial for enhancing scientific transparency and accelerating healthcare advancements, but various challenges hinder effective data management.
  • Key obstacles include insufficient time, lack of awareness and funding, absence of standardized processes, and confusion over data sharing laws.
  • To improve data findability and usability in cardiovascular research, a culture of open science and education on FAIR (Findable, Accessible, Interoperable, Reusable) principles should be promoted, requiring consistent effort across all research levels.
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Article Synopsis
  • Advanced heart failure therapies like ventricular assist devices (VADs) require patients to adjust psychosocially, highlighting the need to study social support factors among these individuals.
  • A study involving 393 participants with VAD support found that most reported high social support and experienced normal anxiety levels, mildly elevated depression, and good quality of life.
  • Results showed that higher perceived social support correlated with lower anxiety and depression and better quality of life, suggesting the importance of targeted social support interventions for VAD patients.
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Rehabilitation facilities' research needs and knowledge transfer in Southwest Germany: Data of the REHA-KNOWS study.

Data Brief

December 2023

Institute of Medical Biometry and Statistics, Section of Health Care Research and Rehabilitation Research, Faculty of Medicine and Medical Center - University of Freiburg, Hugstetter Straße 49, 79106 Freiburg im Breisgau, Germany.

The REHA-KNOWS study was conducted to identify research needs, to explore attitudes and barriers towards health services research as well as to investigate knowledge transfer strategies in rehabilitation facilities in Southwest Germany. We designed a short online survey with 18 questions. From March to May 2023, we surveyed representatives of rehabilitation facilities in two German Federal States (Baden-Wuerttemberg and Saarland) using an online questionnaire provided via Unipark.

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Evaluating case management for caregivers of children with spinal muscular atrophy type I and II-an exploratory, controlled, mixed-methods trial.

Front Pediatr

September 2023

Section of Health Care Research and Rehabilitation Research, Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany.

Introduction: Spinal muscular atrophy (SMA) is a rare neuromuscular disease requiring various clinical specialists and therapists to provide care. Due to the disease's dynamic nature and the long distances between specialized centers and local providers, integrating care between disciplines can be challenging. Care that is inadequately integrated can compromise the quality of care and become a burden for patients and families.

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Article Synopsis
  • Dermatitis herpetiformis (DH) is a rare skin condition triggered by gluten, characterized by the presence of specific IgA autoantibodies against proteins like endomysium and transglutaminase.
  • An international study analyzed serum samples from 242 DH patients at diagnosis, using various methods including indirect immunofluorescence on monkey oesophagus and ELISA tests for specific autoantibodies.
  • The findings showed that IgA antibodies detected via indirect immunofluorescence had the highest reactivity and diagnostic accuracy, indicating a strong link between these autoantibodies and DH, which can be further improved with additional testing.
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Gut Microbiota in Diagnosis, Therapy and Prognosis of Cholangiocarcinoma and Gallbladder Carcinoma-A Scoping Review.

Microorganisms

September 2023

Department of General, Visceral and Transplant Surgery, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany.

Article Synopsis
  • Biliary tract cancers are more prevalent in Asia and are highly lethal due to late diagnosis and aggressive nature, with a possible link to gut microbiota that remains unexplored.
  • A scoping review identified 12 relevant studies but found inconsistencies in microbiota diversity analyses and no clear bacterial species associations between cancer patients and healthy individuals.
  • Current evidence does not support the integration of gut microbiota diagnostics in managing biliary tract cancer patients, emphasizing the need for more rigorous research on this topic.
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Accuracy of Computerized Optical Impression Making in Fabrication of Removable Dentures for Partially Edentulous Jaws: An In Vivo Feasibility Study.

J Funct Biomater

September 2023

Department of Prosthetic Dentistry, Medical Center-University of Freiburg, Center for Dental Medicine, Faculty of Medicine, University of Freiburg, Hugstetter Street 55, 79106 Freiburg, Germany.

The use of computerized optical impression making (COIM) for the fabrication of removable dentures for partially edentulous jaws is a rising trend in dental prosthetics. However, the accuracy of this method compared with that of traditional impression-making techniques remains uncertain. We therefore decided to evaluate the accuracy of COIM in the context of partially edentulous jaws in an in vivo setting.

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Background: Respiratory distress syndrome is the main cause of mortality and morbidity in preterm infants. "Less invasive surfactant administration" (LISA), which describes intratracheal surfactant administration to spontaneously breathing infants via a small diameter tube, is recommended as the first-line treatment in preterm infants with more than 30% supplemental oxygen. Prophylactic use of LISA in preterm infants with less than 30% supplemental oxygen was not tested in randomised controlled trials yet, and long-term outcome data of the procedure are scarce.

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Likelihood ratios are frequently utilized as basis for statistical tests, for model selection criteria and for assessing parameter and prediction uncertainties, e.g. using the profile likelihood.

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Allogeneic hematopoietic stem cell transplantation (HSCT) is a curative treatment for many inborn errors of immunity, metabolism, and hematopoiesis. No predictive models are available for these disorders. We created a machine learning model using XGBoost to predict survival after HSCT using European Society for Blood and Marrow Transplant registry data of 10,888 patients who underwent HSCT for inborn errors between 2006 and 2018, and compared it to a simple linear Cox model, an elastic net Cox model, and a random forest model.

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Catheter based left atrial appendage closure in-hospital outcomes in Germany from 2016 to 2020.

Clin Res Cardiol

October 2024

Department of Cardiology and Angiology, Faculty of Medicine, University Heart Center Freiburg-Bad Krozingen, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany.

Background: New and refined catheter based left atrial appendage (LAA) closure devices have been introduced in the past decade. The procedure can be performed using either an endocardial occlusion device or an epicardial loop stitch. We aimed to analyzed recent procedural safety.

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The impact of teeth and dental restorations on gray value distribution in cone-beam computer tomography: a pilot study.

Int J Implant Dent

September 2023

Department of Oral and Maxillofacial Surgery, Charité, Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany.

Purpose: To investigate the influence of teeth and dental restorations on the facial skeleton's gray value distributions in cone-beam computed tomography (CBCT).

Methods: Gray value selection for the upper and lower jaw segmentation was performed in 40 patients. In total, CBCT data of 20 maxillae and 20 mandibles, ten partial edentulous and ten fully edentulous in each jaw, respectively, were evaluated using two different gray value selection procedures: manual lower threshold selection and automated lower threshold selection.

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The concept of treatment beliefs in children and adolescents with chronic health conditions: a scoping review.

Health Psychol Rev

September 2024

Section of Health Care Research and Rehabilitation Research, Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany.

Children and adolescents with chronic health conditions are faced with ongoing challenges, making self-regulation crucial. As children grow up, they gradually develop differentiated beliefs about illness and treatment. While research indicates treatment beliefs as relevant factor on outcomes like adherence, the specific contents and dimensions of children's and adolescents' treatment beliefs remained unclear.

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Article Synopsis
  • The study aims to explore how a specific genetic score related to Parkinson's disease (PD) interacts with lifestyle choices to influence the age at which patients develop PD.
  • Researchers analyzed data from over 7,600 individuals, including PD patients and healthy controls, to determine the effects of lifestyle factors like coffee, tobacco, and aspirin on the age of onset.
  • Results indicated that while lower genetic risk is associated with earlier onset, lifestyle factors, particularly aspirin usage, significantly reduced the age at onset, suggesting that these factors may be more impactful than genetic predisposition alone.
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Target trial emulation with multi-state model analysis to assess treatment effectiveness using clinical COVID-19 data.

BMC Med Res Methodol

September 2023

Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Centre, University of Freiburg, Freiburg, Germany.

Background: Real-world observational data are an important source of evidence on the treatment effectiveness for patients hospitalized with coronavirus disease 2019 (COVID-19). However, observational studies evaluating treatment effectiveness based on longitudinal data are often prone to methodological biases such as immortal time bias, confounding bias, and competing risks.

Methods: For exemplary target trial emulation, we used a cohort of patients hospitalized with COVID-19 (n = 501) in a single centre.

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Transcatheter aortic valve implantation (TAVI) has become the preferred treatment option for patients with severe aortic stenosis at increased risk for surgical aortic valve replacement (SAVR) and for older patients irrespective of risk. However, in younger, low-risk patients for whom both therapeutic options, TAVI and SAVR, are applicable, the optimal treatment strategy remains controversial, as data on long-term outcomes remain limited. The DEDICATE-DZHK6 Trial is an investigator-initiated, industry-independent, prospective, multicentre, randomised controlled trial investigating the efficacy and safety of TAVI compared to SAVR in low- to intermediate-risk patients aged 65 years or older.

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Investigating two mobile just-in-time adaptive interventions to foster psychological resilience: research protocol of the DynaM-INT study.

BMC Psychol

August 2023

Research Division of Mind and Brain, Department of Psychiatry and Neurosciences CCM, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, and Berlin Institute of Health, Berlin, Germany.

Background: Stress-related disorders such as anxiety and depression are highly prevalent and cause a tremendous burden for affected individuals and society. In order to improve prevention strategies, knowledge regarding resilience mechanisms and ways to boost them is highly needed. In the Dynamic Modelling of Resilience - interventional multicenter study (DynaM-INT), we will conduct a large-scale feasibility and preliminary efficacy test for two mobile- and wearable-based just-in-time adaptive interventions (JITAIs), designed to target putative resilience mechanisms.

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Exhaled breath contains numerous volatile organic compounds (VOCs) known to be related to lung disease like asthma. Its collection is non-invasive, simple to perform and therefore an attractive method for the use even in young children. We analysed breath in children of the multicenter All Age Asthma Cohort (ALLIANCE) to evaluate if 'breathomics' have the potential to phenotype patients with asthma and wheeze, and to identify extrinsic risk factors for underlying disease mechanisms.

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Integrating row level security in i2b2: segregation of medical records into data marts without data replication and synchronization.

JAMIA Open

October 2023

Institute of Artificial Intelligence and Informatics in Medicine (AIIM), Chair of Medical Informatics, University Hospital rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany.

Objective: i2b2 offers the possibility to store biomedical data of different projects in subject oriented data marts of the data warehouse, which potentially requires data replication between different projects and also data synchronization in case of data changes. We present an approach that can save this effort and assess its query performance in a case study that reflects real-world scenarios.

Material And Methods: For data segregation, we used PostgreSQL's row level security (RLS) feature, the unit test framework pgTAP for validation and testing as well as the i2b2 application.

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Article Synopsis
  • The ENABLE study aims to evaluate the effectiveness of amyloid PET scans in diagnosing dementia and the impact on patients' daily functioning over 24 months.
  • Approximately 1126 participants with uncertain causes of mild to moderate dementia will be divided into two groups: one receiving the amyloid PET scan and the other not.
  • Key outcomes will include improvements in daily living activities, diagnostic confidence, and overall cognitive health, with the goal of enhancing decision-making in dementia care.
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Article Synopsis
  • Myocardial infarction frequently leads to out-of-hospital cardiac arrests (OHCA), yet the long-term effects of early coronary angiography for patients without ST-segment elevation are unknown.
  • The TOMAHAWK trial compared the outcomes of early unselective angiography versus delayed/selective angiography in 554 patients who were successfully resuscitated from OHCA with suspected cardiac causes.
  • Results were measured after one year, focusing on all-cause mortality, severe neurological deficits, myocardial infarction rates, and rehospitalization among survivors.
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Background: Estimation of regurgitant fraction by videodensitometry (VD-AR) of aortic root angiograms is a new tool for objective grading of paravalvular regurgitation (PVR) after transcatheter aortic valve implantation (TAVI). Stratification with boundaries at 6% and 17% has been proposed to reflect "none/trace", "mild" and "moderate or higher" PVR.

Objective: We sought to investigate the association of strata of VD-AR with 3-year mortality and to compare VD-AR with visual grading of angiograms.

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Objectives: Multimorbidity challenges healthcare systems. In Germany, coordination of healthcare for older multimorbid patients remains unstructured.This study aims to identify key themes in the healthcare of these patients and the inter-relationships between them.

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