Publications by authors named "Britta Lang"

Article Synopsis
  • Clinicians globally are managing research alongside their regular workloads, leading to the establishment of Clinical Trial Units (CTUs) that support high-quality Investigator Initiated Trials (IITs) and promote international standards.
  • The study aimed to identify the critical services that International Clinical Trial Center Network (ICN) members consider essential for effective clinical trial management, contributing to global harmonization.
  • Results indicated that services focused on quality management and coordination are prioritized, while operational services are viewed as less critical, suggesting CTUs should enhance their management expertise and training efforts for clinicians.
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With the implementation of the new EU Regulation 536/2014 (Clinical Trials Regulation - CTR) on 31 January 2022, the approval and conduct of clinical trials with medicinal products for human use are to be harmonized within the European Union (EU). Approval is granted via the electronic Clinical Trials Information System (CTIS) portal of the European Medicines Agency (EMA). In addition to commercial sponsors, sponsors at academic institutions are also affected by the implementation of the CTR in the context of investigator-initiated clinical trials (IITs).

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Background: Genomics-based noninvasive prenatal tests (NIPT) allow screening for chromosomal anomalies such as Down syndrome (trisomy 21). The technique uses cell-free fetal DNA (cffDNA) that circulates in the maternal blood and is detectable from 5 weeks of gestation onwards. Parents who choose to undergo this relatively new test (introduced in 2011) might be aware of its positive features (i.

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Background: Back pain is one of the most frequent causes of health-related work absence. In Germany, more than 70% of adults suffer from at least one back pain episode per annum. It has strong impact on health care costs and patients' quality of life.

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Introduction: The number of clinical trials investigating the optimal timing of prophylactic antibiotics in cesarean section has increased rapidly over the last few years. We conducted a systematic review to inform up-to-date evidence-based guidelines to prevent postpartum infectious morbidity in the mother and rule out any safety issues related to antepartum antibiotic exposure in infants.

Material And Methods: Four bibliographic databases were searched for published reports of trials.

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Background: Postpartum haemorrhage (PPH) is a major cause of maternal mortality and morbidity worldwide. Experimental and clinical studies indicate that prolonged oxytocin exposure in the first or second stage of labour may be associated with impaired uterine contractility and an increased risk of atonic PPH. Therefore, particularly labouring women requiring cesarean delivery constitute a subset of patients that may exhibit an unpredictable response to oxytocin.

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Article Synopsis
  • The objective of the review was to explore various methods for detecting and adjusting for the nonpublication of studies (dissemination bias) in meta-analyses and to check their application on empirical datasets.
  • The study involved a systematic search of reputable databases, leading to the inclusion of 150 relevant articles that described a wide range of methods, from graphical techniques like funnel plots to advanced statistical methods.
  • Despite identifying many approaches, the review concludes that most methods lack validation with real unpublished studies, making it challenging to recommend a specific method and highlighting the need for comprehensive literature searches and actions to improve access to research findings.
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Background: Systematic reviews of preclinical studies, in vivo animal experiments in particular, can influence clinical research and thus even clinical care. Dissemination bias, selective dissemination of positive or significant results, is one of the major threats to validity in systematic reviews also in the realm of animal studies. We conducted a systematic review to determine the number of published systematic reviews of animal studies until present, to investigate their methodological features especially with respect to assessment of dissemination bias, and to investigate the citation of preclinical systematic reviews on clinical research.

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In order to address the increasing complexity and continuously changing needs and demands in the German healthcare system, there is a need to strengthen knowledge translation, evidence-based practice and the conduct of clinical trials in the field of allied health professions. An interdisciplinary working group representing the fields of nursing, midwifery, physiotherapy, occupational therapy and speech therapy developed a guide and a concept for seminars to provide potential analyses for research and innovations in the allied health professions in Germany. These potential analyses compare the current state of health care delivery for specific health problems and the corpus of evidence for the effectiveness of related interventions.

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Background: Health professionals and policymakers aspire to make healthcare decisions based on the entire relevant research evidence. This, however, can rarely be achieved because a considerable amount of research findings are not published, especially in case of 'negative' results - a phenomenon widely recognized as publication bias. Different methods of detecting, quantifying and adjusting for publication bias in meta-analyses have been described in the literature, such as graphical approaches and formal statistical tests to detect publication bias, and statistical approaches to modify effect sizes to adjust a pooled estimate when the presence of publication bias is suspected.

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Background: Selective publication of studies, which is commonly called publication bias, is widely recognized. Over the years a new nomenclature for other types of bias related to non-publication or distortion related to the dissemination of research findings has been developed. However, several of these different biases are often still summarized by the term 'publication bias'.

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Background: Meta-analyses are particularly vulnerable to the effects of publication bias. Despite methodologists' best efforts to locate all evidence for a given topic the most comprehensive searches are likely to miss unpublished studies and studies that are published in the gray literature only. If the results of the missing studies differ systematically from the published ones, a meta-analysis will be biased with an inaccurate assessment of the intervention's effects.

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Background: Systematic reviews and meta-analyses of pre-clinical studies, in vivo animal experiments in particular, can influence clinical care. Publication bias is one of the major threats of validity in systematic reviews and meta-analyses. Previous empirical studies suggested that systematic reviews and meta-analyses have become more prevalent until 2010 and found evidence for compromised methodological rigor with a trend towards improvement.

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Background: Methodological research has found that non-published studies often have different results than those that are published, a phenomenon known as publication bias. When results are not published, or are published selectively based on the direction or the strength of the findings, healthcare professionals and consumers of healthcare cannot base their decision-making on the full body of current evidence.

Methods: As part of the OPEN project (http://www.

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Background: Access to health information is critical to enable consumers to participate in decisions on health. Increasingly, such information is accessed via the internet, but a number of barriers prevent consumers making effective use of it. These barriers include inadequate skills to search, evaluate and use the information.

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The impact that research evidence can have on patients making decisions about their own care is often overlooked. Regardless of whether patients want to lead or fully participate in their care, it appears that patients still want to be informed. We have health information that patients could benefit from knowing, a growing body of evidence and experiences about how to translate this information to patients.

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There is a considerable amount of uncertainty regarding the care of individual patients. The present paper describes the handling of uncertainties in patient care and its relevance for shared and informed decision-making. What affects the physician-patient relationship, and which strategies may contribute to communicating uncertainties in a constructive manner? Data from clinical trials describe and reduce our knowledge about uncertainty of treatment effects.

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The aim of the Cochrane Collaboration (CC) is to bridge the gap of information transfer between the clinician and the patient. For this purpose, the CC pursues since years the concept of involving the consumers in the process of collaborative review groups. In spite of a positive experience altogether, some barriers (for example the communication between the scientists involved in CC review groups and the patients) remain to be overcome.

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