Results 221 to 230 of about 99,187 (266)

Observer variation and reproducibility of endoscopic ultrasonography

Gastrointestinal Endoscopy, 1995
To investigate interobserver variation and reproducibility of endosonographic findings, both experienced and inexperienced endosonographers evaluated depth of tumor invasion (T stage) and presence of lymph node metastasis (N stage) in 50 patients with nonobstructing esophageal carcinoma.
M F, Catalano, M V, Sivak, R A, Bedford, G W, Falk, R, van Stolk, F, Presa, J, Van Dam   +6 more
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Observations of Irradiance Variations

Space Science Reviews, 2000
Since November 1978 a complete set of total solar irradiance (TSI) measurements from space is available, yielding a time series of 21 years. From measurements made by different space radiometers (HF on NIMBUS-7, ACRIM I on SMM, ACRIM II on UARS and VIRGO on SOHO) a composite record of TSI can be compiled.
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OBSERVER VARIATION IN THE CLINICAL ASSESSMENT OF STROKE

Age and Ageing, 1976
Clinical assessments have to be used in epidemiological studies in the absence of more objective means of establishing diagnosis or recording events in the natural history of disease. This requires the standardization of definition, technique and interpretation as a means of reducing observer variability in clinical examination.
W M, Garraway, A J, Akhtar, S M, Gore, R J, Prescott, R G, Smith   +4 more
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Observer variation in the interpretation of bone scintigraphy

Journal of Clinical Epidemiology, 1996
To assess the reliability of bone scintigraphy, a random sample of 100 bone scans was reviewed twice by each of two physicians. Observer variation in the description and interpretation of bone scintigrams varied by diagnosis. Good to excellent k values were obtained for inter- and intraobserver variation in relation to metastasis or normal scans.
L, Ore, R, Hardoff, S, Gips, A, Tamir, L, Epstein   +4 more
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Observer variation in equine abdominal auscultation

Equine Veterinary Journal, 1990
Summary The reliability of abdominal auscultation was investigated via an observer variation study. Clinicians listened to a variety of minute‐long equine gut sound recordings. They evaluated the amount of gut sounds as ‘absent’, ‘decreased’, ‘normal’, or ‘increased’.
E E, Ehrhardt, J E, Lowe
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Observer variation in the assessment of resin composite

Dental Materials, 1998
The aim of this study was to compare the type of information obtained from log-linear modelling vs Cohen's kappa statistics on observer variation in the assessment of marginal adaptation in composite inlays and amalgam restorations.Marginal adaptation of Class II resin composite inlays and amalgam restorations was clinically assessed by two observers ...
Tobi, H., Groen, H.J., Kreulen, C.M., Amerongen, W.E. van   +3 more
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Observations of Time Variation in the Sun's Rotation

Science, 1993
Observations of solar p-mode frequency splittings obtained at Big Bear Solar Observatory in 1986 and during 1988-90 reveal small (∼1 percent) changes in the sun's subsurface angular velocity with solar cycle. An asymptotic inversion of the splitting data yields the latitude dependence of the rotation rate and shows that the largest changes in the ...
Woodard, M. F., Libbrecht, K. G.
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Variation of Stereoscopic Acuity with Observation Distance

Journal of the Optical Society of America, 1963
The stereoscopic acuity of five subjects was investigated in two consecutive and related studies. In the first one a modified horopter apparatus was used and the stereoscopic acuity was determined, at a mean retinal locus of 4° to the left of the fovea, at the 333- and 1000-mm observation distances.
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Laser Resurfacing: Observations and Variations

International Journal of Cosmetic Surgery and Aesthetic Dermatology, 2000
Laser resurfacing has become increasingly popular among cosmetic surgeons and the public during the last decade. Numerous brands and types of lasers are available. Countless choices of postsurgical wound care methods and mechanisms are available. New technology and variable practice patterns have resulted in less standardized care.
Paul J. Weber, Robert S. Bader, Gale Oleson   +2 more
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Observed phenotypic variation in a Paleozoic bryozoan

Paleobiology, 1995
Documentation of morphologic variation within and among fossil species (and larger clades) provides fundamental data needed for studies of evolution, paleoecology, and the systematic foundation required for most fields of paleobiology. In paleontological (and, frequently, biological) studies, morphologic variation is used as a general proxy for genetic
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