All trials must be registered and the results published
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The term “dysfunction” defines the motor disorders of the gall bladder and the sphincter of Oddi (SO) without note of the potential etiologic factors for the difficulty to differentiate purely functional alterations from subtle structural changes. Dysfunction of the gall bladder and/or SO produces similar patterns of biliopancreatic pain and SO dysfunction may occur in the presence of the gall bladder. The symptom-based diagnostic criteria of gall bladder and SO dysfunction are episodes of severe steady pain located in the epigastrium and right upper abdominal quadrant which last at least 30 minutes. Gall bladder and SO dysfunctions can cause significant clinical symptoms but do not explain many instances of biliopancreatic type of pain. The syndrome of functional abdominal pain should be differentiated from gall bladder and SO dysfunction. In the diagnostic workup, invasive investigations should be performed only in the presence of compelling clinical evidence and after non-invasive testing has yielded negative findings. Gall bladder dysfunction is suspected when laboratory, ultrasonographic, and microscopic bile examination have excluded the presence of gallstones and other structural abnormalities. The finding of decreased gall bladder emptying at cholecystokinin-cholescintigraphy is the only objective characteristic of gall bladder dysfunction. Symptomatic manifestation of SO dysfunction may be accompanied by features of biliary obstruction (biliary-type SO dysfunction) or significant elevation of pancreatic enzymes and pancreatitis (pancreatic-type SO dysfunction). Biliary-type SO dysfunction occurs more frequently in postcholecystectomy patients who are categorized into three types. Types I and II, but not type III, have biochemical and cholangiographic features of biliary obstruction. Pancreatic-type SO dysfunction is less well classified into types. When non-invasive investigations and endoscopic retrograde cholangiopanreatography show no structural abnormality, manometry of both biliary and pancreatic sphincter may be considered.
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There is growing support for all registered clinical trials to be required to publish their results [44].
“There is growing support for all registered clinical trials to be required to publish their results [44].”
From Parental attitudes to randomised controlled trials in primary dental care: A qualitative study (2026) · cites this paper as [44]
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Quality of Reporting in Oncology Randomized Controlled Trials
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Neue Richtlinien zur Gestaltung von Manuskripten
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Warum wir Forschungsprioritäten zur Vermeidung von Research Waste brauchen
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- Authors
- Chalmers, I., Glasziou, P., & Godlee, F.
- Affiliations
- Bond University (AU)
- BMJ Group (United Kingdom) (GB)
- Corresponding author
- Chalmers, I.
- Venue
- BMJ
- Publisher
- BMJ
- Published
- 2013-01-09
- Volume
- 346
- Issue
- jan09 2
- Pages
- f105-f105
- ISSN
- 1756-1833 (ISSN-L)
- OpenAlex
- W2112836899
- Cited by
- 131
- References
- 19
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 2 · 2023: 6 · 2022: 4 · 2021: 4 · 2020: 5 · 2019: 9 · 2018: 8 · 2017: 12 · 2016: 16 · 2015: 21 · 2014: 15 · 2013: 24
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- BMJ (publishedVersion)
- PubMed (publishedVersion)
- Bond University Research Portal (Bond University) (submittedVersion)
- HighWire Press Open Archive (submittedVersion)
- Topics
- Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Gallbladder and Bile Duct Disorders
- Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Meta-analysis and systematic reviews
- Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
- Keywords
- gallbladder dysfunction, sphincter of Oddi dysfunction, functional abdominal pain, postcholecystectomy syndrome, biliary obstruction, pancreatitis, sphincter of Oddi manometry, diagnostic criteria
- MeSH terms
- Clinical Trials as Topic, Periodicals as Topic, Publishing, Registries, Research Support as Topic, Publication Bias, Research Report
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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