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Updated: Apr 19, 2026
Qualitative and Quantitative Validation of Tools with Rating Scales Aimed at Assessing the Quality of University Service-Learning
Published on: August 29, 2025
[Measurement and assessment of study quality and reporting quality]
Anette Blümle1, Erik von Elm2, Gerd Antes3
1Studienzentrum, Universitätsklinikum Freiburg, Freiburg, Deutschland.
Abstract:
Clinical trials are undertaken to evaluate the effectiveness and safety of clinical interventions or to investigate other unclarified (e.g. diagnostic) research questions. But not every clinical study is optimally planned, conducted and analysed and is therefore exposed to risk of systematic errors which can distort (bias) the study results. Clinical studies should be conducted in accordance with specific quality criteria in order to reduce these risks. To estimate the methodological quality of studies instruments such as the Cochrane Risk of Bias tool were developed. But it can only be appraised what is reported. Often important information on the conduct and analysis of a study is missing in research articles, and in most cases detailed study protocols are not freely available. Reporting guidelines available for different study types can help improve the transparency and completeness of reports of clinical studies and thus the reporting quality.
Insights
Clinical trial quality is crucial for reliable results. Reporting guidelines improve transparency and completeness, reducing systematic errors in study findings.
Area of Science:
- Clinical research
- Medical methodology
- Evidence-based medicine
Background:
- Clinical trials evaluate intervention effectiveness and safety.
- Suboptimal planning, conduct, or analysis introduces systematic errors (bias).
- Assessing methodological quality is essential for reliable study outcomes.
Purpose of the Study:
- To highlight the importance of quality criteria in clinical studies.
- To address the limitations of current quality assessment tools.
- To emphasize the role of reporting guidelines in improving study transparency.
Main Methods:
- Discussion of methodological quality assessment tools (e.g., Cochrane Risk of Bias).
- Analysis of information gaps in research articles.
- Emphasis on the availability and utility of study protocols.
Main Results:
- Methodological quality assessment is limited by reported information.
- Research articles frequently lack crucial details on study conduct and analysis.
- Study protocols are often not publicly accessible.
Conclusions:
- Improved reporting quality is necessary for accurate clinical study evaluation.
- Reporting guidelines enhance transparency and completeness of clinical study reports.
- Addressing information deficits is key to reducing bias and strengthening evidence-based medicine.
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