Observer variation. Causes, symptoms, treatment Observer variation
Treatment Observer variation. Symptoms and causes Observer variation Prophylaxis Observer variation ... Observer variation: Failure by the observer to measure accurately, resulting in error. Observer variation may be due to the ... For More Information «Observer variation». *. Observer Variation - - MeSH result - National Center for .... We are sorry, but ... Inter-observer variation is the amount of variation between the results obtained by two or more observers examining the same ...http://drugster.info/medic/term/observer-variation/
HRCT diagnosis of diffuse parenchymal lung disease: inter-observer variation
Inter-observer variation for the first choice diagnosis was quantified using the unadjusted kappa coefficient of agreement. ... This study was designed to measure inter-observer variation between thoracic radiologists in the diagnosis of diffuse ... Observer agreement on the first choice diagnosis was moderate for the entire cohort (kappa = 0.48) and was higher for cases ... Observers stated differential diagnoses and assigned a percentage likelihood to each. A weighted kappa was calculated for the ...http://connection.ebscohost.com/c/articles/13599836/hrct-diagnosis-diffuse-parenchymal-lung-disease-inter-observer-variation
Observer variation in the histological grading of rectal carcinoma. | Journal of Clinical Pathology
The variation between two observers in grading 100 biopsies and the corresponding main specimens of rectal carcinomas has been ... However, disagreements between observers were in many instances "haphazard" and there were differences in bias between them. ... Fifty paired biopsies and main tumours were graded by five observers and the results analysed for bias and by kappa statistics ... Examination for observer bias indicated differing standards of grading, and haphazard disagreements reached high levels for ...http://jcp.bmj.com/content/36/4/385
Observer variation in grading sacroiliac radiographs might be a cause of 'sacroiliitis' reported in certain disease states. |...
Observer variation in grading sacroiliac radiographs might be a cause of 'sacroiliitis' reported in certain disease states. ... Observer variation in grading sacroiliac radiographs might be a cause of 'sacroiliitis' reported in certain disease states. ... We conclude that high observer variation in interpreting a film of the anteroposterior (AP) view of the pelvis for sacroiliitis ... Although the inter- and intraobserver variation was quite high, all observers found the expected changes in patients with AS. ...http://ard.bmj.com/content/46/2/139
Inter-observer variation in symphysis-fundus measurements : a plea for individualised antenatal care
... Pattinson R.C. ; Theron G ... It is considered that this difference was due to inter-observer variability. A plea is made for individualised antenatal care. ...http://scholar.sun.ac.za/handle/10019.1/7365
Observer Variation in MRI Evaluation of Patients Suspected of Lumbar Disk Herniation - PDF
Variation in MRI Evaluation of Disk Herniation Observer Variation in MRI Evaluation of Patients Suspected of Lumbar Disk ... Observer variation is a general problem in research settings. Clear methodology on how to conduct a proper observer-variation ... Variation in MRI Evaluation of Disk Herniation Observer Variation in MRI Evaluation of Patients Suspected of Lumbar Disk ... We also assessed possible causes of disagreement between observers and the effect of clinical information on observer variation ...http://docplayer.net/17737548-Observer-variation-in-mri-evaluation-of-patients-suspected-of-lumbar-disk-herniation.html
HKU Scholars Hub: Inter-observer variations on interpretation of capsule endoscopies
Inter-observer variations on interpretation of capsule endoscopies. Authors. Lai, LHWong, GLHChow, DKLLau, JYWSung, JJYLeung, ... Article: Inter-observer variations on interpretation of capsule endoscopies. *Show simple item record ... Here we studied the potential inter-observer variations on the interpretation of capsule endoscopy. Method: Two residents and ... Here we studied the potential inter-observer variations on the interpretation of capsule endoscopy. Method: Two residents and ...http://hub.hku.hk/handle/10722/162943
"Observer variation in MRI evaluation of patients with suspected lumbar" by Imaad Ur Rehman, Rana Shoaib Hamid et al.
Both observers were unaware of the patient\'s clinical history and each other\'s findings. Lumbar discs at L3-L4, L4-L5 and L5- ... Excellent inter-observer agreement was seen for the presence or absence of nerve root compression (Percentage agreement = 88.89 ... Inter-observer agreement between neuroradiologist and neurosurgeon in diagnosing nerve root compression due to lumbar disc ... although inter-observer agreement was fair, but the difference was statistically significant (Percentage agreement =84.57%; k ...https://ecommons.aku.edu/pakistan_fhs_mc_surg_neurosurg/39/
Regional observer performance variation in the evaluation of gated cardiac blood pool studies - Semantic Scholar
The observer response is significantly better in the apex than either the septum or posterolateral wall segments. The observer ... analysis demonstrated that regional variations of sensitivity exist in the detection of wall motion abnormality in cardiac ... Regional observer performance variation in the evaluation of gated cardiac blood pool studies. *. Stephen Jackson, R. S. ... The observer response is significantly better in the apex than either the septum or posterolateral wall segments. The observer ...https://www.semanticscholar.org/paper/Regional-observer-performance-variation-in-the-of-Jackson-Nickerson/6028650970e42d339070e27d65c7b4bcc4940696
Variation of Proton Flux Profiles with the Observer's Latitude in Simulated Gradual SEP Events | SpringerLink
... events with the relative observer's position in space with respect to... ... We studied the variation of the shape of the proton intensity-time profiles in simulated gradual Solar Energetic Particle (SEP ... The peak intensity variation with the radial distance for the pair of observers located at the same angular position was also ... Variation of Proton Flux Profiles with the Observer's Latitude in Simulated Gradual SEP Events. ...https://link.springer.com/article/10.1007%2Fs11207-013-0442-1
Imaging and Oncology Flashcards - Oncology | Brainscape
1. X-RAYS. -Simple, inexpensive, readily available, easily interpreted. -Radiation, poor tissue contrast, technician dependent, 2D. 2. CT SCAN. -Rapid, 3D capability, axial imaging, good bony detail. -Highest radiation, motion & metal artifact, limited ST contrast. 3. BONE SCANS. -Images metabolic activity, very sensitive in bones, low cost. -Non-specific, poor detail, anatomic changes not visualized. 4. MRI. -Superior tissue resolution. -Expensive, motion & metal artifact, can't use in some patients. 5. PET/CT or MRI. -Combines function and anatomy, best imaging for most cancers. -Expensive (pre-authorization). 6. ULTRASOUND. -Very safe, inexpensive, quick. -Small field of view, technician and radiologist dependent, artifacts. ...https://www.brainscape.com/flashcards/imaging-and-oncology-5106033/packs/7549553
Electrocardiographic criteria for detecting acute myocardial infarction in patients with left bundle branch block: a meta...
Observer Variation ... and inter-observer agreement for the presence or absence of ECG ... Results for 14 groups of observers (six studies, n = 1,287) revealed substantial inter-observer agreement (kappa = 0.7). ... Review Diagnosing acute myocardial infarction in the setting of left bundle branch block: prevalence and observer variability ... Review Diagnosing acute myocardial infarction in the setting of left bundle branch block: prevalence and observer variability ...https://www.ncbi.nlm.nih.gov/books/NBK75451/
Development of a methodological PubMed search filter for finding studies on measurement properties of measurement instruments |...
... "observer variation"[MeSH] OR observer variation[tiab] OR "discriminant analysis"[MeSH] OR reliab*[tiab] OR valid*[tiab] OR ... "observer variation"[MeSH] OR observer variation[tiab] OR "Health Status Indicators"[Mesh] OR "reproducibility of results"[MeSH ... OR inter-observer[tiab] OR intraobserver[tiab] OR intra-observer[tiab] OR intertechnician[tiab] OR inter-technician[tiab] OR ... OR inter-observer[tiab] OR intraobserver[tiab] OR intra-observer[tiab] OR intertechnician[tiab] OR inter-technician[tiab] OR ...https://link.springer.com/article/10.1007%2Fs11136-009-9528-5
Treesearch - scientific articles written or published by the U.S. Forest Service
The role of observer variation in determining Rosgen stream types in northeastern Oregon mountain streams. Consistency in ...https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Moore%2C%20Roderquita%22&%3Bf%5B0%5D=station_historical_full%3A%22North%20Central%20Research%20Station%22&f%5B0%5D=author_facet%3A%22Winn%2C%20Matthew%22&f%5B1%5D=author_facet%3A%22Yesilonis%2C%20Ian%22&f%5B2%5D=author_facet%3A%22Buffington%2C%20John%22
Treesearch - scientific articles written or published by the U.S. Forest Service
The role of observer variation in determining Rosgen stream types in northeastern Oregon mountain streams. Consistency in ...https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Elliot%2C%20William%22&%3Bf%5B0%5D=author_facet%3A%22Manley%2C%20Ph.D.%2C%20Patricia%22&f%5B0%5D=author_facet%3A%22Lehmkuhl%2C%20John%22&f%5B1%5D=author_facet%3A%22McCaffrey%2C%20Sarah%20M.%22&f%5B2%5D=author_facet%3A%22Ward%2C%20Mike%22
Cardiovascular magnetic resonance tagging of the right ventricular free wall for the assessment of long axis myocardial...
Observer Variation. Predictive Value of Tests. Prospective Studies. Reproducibility of Results. Stroke Volume*. Ventricular ... Bland-Altman plots showing inter-observer and intra-observer reproducibility of RV displacements by the manual (a and c) and ... The gains in intra-observer reproducibility were of a similar magnitude. The intra- and inter-observer reproducibility we ... This technique introduces potential sources of variation between observers or studies. Another approach used 3D-modeling to ...http://www.biomedsearch.com/nih/Cardiovascular-Magnetic-Resonance-Tagging-Right/22168638.html
Changes in endodontic status 1973-1993 among 35-year-olds in Oslo, Norway.
Observer Variation. Periapical Periodontitis / epidemiology*, radiography. Prevalence. Radiography, Panoramic. Reproducibility ...http://www.biomedsearch.com/nih/Changes-in-endodontic-status-1973/8626195.html
Conservation Monitoring in Freshwater Habitats - A Practical Guide and Case Studies | Clive Hurford | Springer
The Implications of Observer Variation for Existing Macrophyte Recording Methods. Hurford, Clive (et al.) ...https://www.springer.com/us/book/9781402092770
Trends in upper gastrointestinal diagnosis over four decades in Lusaka, Zambia: a retrospective analysis of endoscopic findings...
These trends are not explained by inter-observer variation. Reasons for the divergent trends in incidence of peptic ulceration ... and endoscopist as independent variables to adjust for inter-observer variation. Sixteen thousand nine hundred fifty-three ... Endoscopists and inter-observer variation. A total of 37 doctors performed most of the endoscopies (31 physicians, 5 surgeons ... 1). With respect to inter-observer variation there is clear evidence that doctors differed with respect to diagnosis (Table 2 ...https://bmcgastroenterol.biomedcentral.com/articles/10.1186/s12876-015-0353-8
Changes in cardiac volume determined with repeated enhanced 4DCT during chemoradiotherapy for esophageal cancer | Radiation...
No significant intra-observer variation was found (p , 0.05). The intra-observer error (5.40 ± 0.95 cm3) was significantly ... Exclusion of intra-observer variation. The heart volumes of six patients were determined five times by the same radiation ... For the determination of intra-observer variation, the heart volumes of six patients were delineated five times by the same ... All delineations were performed by the same radiation oncologist to avoid inter-observer variation. ...https://ro-journal.biomedcentral.com/articles/10.1186/s13014-018-1121-z