Results 321 to 330 of about 2,932,343 (371)

Some issues in resolution of diagnostic tests using an imperfect gold standard

Statistics in Medicine, 2001
AbstractAs a subject's true disease status is seldom known with certainty, it is necessary to compare the performance of new diagnostic tests with those of a currently accepted but imperfect ‘gold standard’. Errors made by the gold standard mean that the sensitivity and specificity calculated for the new test are biased, and do not correctly estimate ...
D M, Hawkins, J A, Garrett, B, Stephenson   +2 more
openaire   +2 more sources

Comparison of screening tests without a gold standard—A pragmatic approach with virtual reference testing

Acta Tropica, 2019
Well-defined diagnostic gold standards are rarely available for the diagnosis of rare diseases such as some tropical infections. Algorithms for reliable test evaluation without gold standard are therefore desirable. On the basis of previous work of Gart and Buck (1966); Rogan and Gladen (1978), and Hui and Walter (1980), a modeling approach for the ...
Andreas, Hahn, Norbert Georg, Schwarz, Hagen, Frickmann   +2 more
openaire   +2 more sources

Making diagnoses with multiple tests under no gold standard

2018
In many applications, it is common to have multiple diagnostic tests on each subject. When there are multiple tests available, combining tests to incorporate information from various aspects in subjects may be necessary in order to obtain a better diagnostic. For continuous tests, in the presence of a gold standard, we could combine the tests linearly [
openaire   +1 more source

Cross-Cultural Validity and Reliability Testing of a Standard Psychiatric Assessment Instrument without a Gold Standard

The Journal of Nervous and Mental Disease, 2001
The objective of this study was to assess the cross-culture validity and reliability of a standard psychiatric assessment instrument without the usual "gold standards." Normally criterion validity testing requires comparison with such a standard--usually another instrument or a professional diagnosis.
openaire   +2 more sources

Comparing Two Diagnostic Tests against the Same "Gold Standard" in the Same Sample

Biometrics, 1997
Methods are proposed for comparing two diagnostic tests for the same data where a threshold for positive for each test is specified. One method contrasts the diagnostic tests' estimated risks. A second method compares the two tests' kappa coefficients.
openaire   +2 more sources

Sample selection and gold standard testing for a proper group comparison

European Journal of Neurology, 2021
Sara Gasparini, Edoardo Ferlazzo, Damiano Branca, Umberto Aguglia   +3 more
openaire   +2 more sources

Current treatment and recent progress in gastric cancer

Ca-A Cancer Journal for Clinicians, 2021
Smita S Joshi, Brian D Badgwell
exaly  

Bayesian Sample Size Determination for Prevalence and Diagnostic Test Studies in the Absence of a Gold Standard Test

Biometrics, 2004
N. Dendukuri, E. Rahme, P. Belisle, L. Joseph   +3 more
semanticscholar   +1 more source

Use of the specific challenge in the diagnosis of occupational asthma: a ‘gold standard’ test or a test not used in current practice of occupational asthma?

Current Opinion in Allergy and Clinical Immunology, 2003
D. Banks
semanticscholar   +1 more source

Management of glioblastoma: State of the art and future directions

Ca-A Cancer Journal for Clinicians, 2020
Aaron Tan, David M Ashley, Giselle Lopez
exaly