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Résultats de la recherche - 13 results
Belgian recommendations for analytical verification and validation of immunohistochemical tests in laboratories of anatomic pathology
analysis taking into account the majority of variables regarding verification/validation of methods have been performed, resulting in an expert consensus recommendation that is a compromise between ...
Three-dimensional aesthetic assessment of class II patients before and after orthognathic surgery and its association with quantitative surgical changes.
were found, especially for the chin assessment. Orthodontists perceived the greatest improvement and laypeople the smallest. Overall, laypeople scored higher with less variability, but with lower intra- ...
Inter-laboratory study of human in vitro toxicogenomics-based tests as alternative methods for evaluating chemical carcinogenicity: a bioinformatics perspective.
different laboratories, are still uncommon. Furthermore, there is limited knowledge about variability induced by the data analysis protocols. We have conducted an inter-laboratory study for testing chemical ...
The Monte Carlo validation framework for the discriminant partial least squares model extended with variable selection methods applied to authenticity studies of Viagra® based on chromatographic impurity profiles.
different variable selection schemes: the elimination of uninformative variables, the importance of a variable in projections, selectivity ratio and significance multivariate correlation. The best PLS- DA ...
In vitro Dermal Absorption: Sample Application and Seal Quality in a Franz Diffusion Cell System.
parameters such as temperature and stirring speed can reduce the high variability observed. The Organisation for Economic Co-operation and Development (OECD) and, at the EU level, the Scientific Committee on ...
Application of the characteristic function to evaluate and compare analytical variability in an external quality assessment scheme for serum ethanol.
used to compare the variability of different analytical methods. METHODS: We fitted the characteristic function to data from the Belgian External Quality Assessment program for serum ethanol. Data ...
How appropriate is therapeutic drug monitoring for lithium? Data from the Belgian external quality assessment scheme.
intramethod variability was evaluated by selecting methods used by 6 laboratories or more. Flame photometry (IL 943) was considered as the reference method. RESULTS: Laboratories returned assay results using ...
Comparison of different approaches to evaluate External Quality Assessment Data.
recorded and subsequently, Positive and Negative Predictive Values were derived. Also, the sampling mean and variability were calculated for location and scale estimators. The various approaches performed ...
Impurity fingerprints for the identification of counterfeit medicines--a feasibility study.
course of time. The public health problem of counterfeit drugs is mostly due to this qualitative and quantitative variability in their formulation and impurity profiles. In this study, impurity profiles ...
A new statistical method for evaluating long-term analytical performance of laboratories applied to an external quality assessment scheme for flow cytometry.
past 3 years. This study aims to develop a method to find laboratories with aberrant variability or bias using robust techniques and to obtain robust estimates of the variability. METHODS: A method is ...