Zoekresultaten - 80 results
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 ...
Analysis of 13 million individual patient records pertaining to Pap smears, colposcopies, biopsies and surgery on the uterine cervix (Belgium, 1996-2000).
screening by surveys overestimate coverage because of selection and reporting biases. METHODS: The prepared Inter-Mutualistic Agency dataset has about 13 million records from Pap smears, colposcopies, ...
Effect of pooling and multiplexing on the detection of bluetongue virus RNA by real-time RT-PCR.
assessed. To avoid any bias in the pooling experiments, 121 BTV-8 positive blood samples with a low to high viral load were selected and pooled individually with nine negative blood samples. Analyses of the ...
Critical aspects in implementing the OECD monograph No. 14 "the application of the principles of GLP to in vitro studies".
important pitfall is the lack of description in the experimental design concerning the use of any internal control items to control bias and to evaluate the performance of the test system. Finally, it is ...
Pooled analysis of the accuracy of five cervical cancer screening tests assessed in eleven studies in Africa and India.
verification bias. A major finding was the consistently higher sensitivity but equal specificity of VILI compared with VIA. Nevertheless, some caution is warranted in the interpretation of observed accuracy ...
Accuracy and reproducibility of automated estradiol-17beta and progesterone assays using native serum samples: results obtained in the Belgian external assessment scheme.
/ MS). METHODS: Five fresh frozen serum samples, without additives, from single donors and three pools from pregnant women were distributed to all registered Belgian laboratories. Total variation, bias ...
External quality assessment in the measurement of haemoglobin by blood gas analysers in Belgium.
Libeer, J-C Source: Scand J Clin Lab Invest, Volume 67, Issue 7, p.735-40 (2007) Keywords: Belgium Bias (Epidemiology) Blood Gas Analysis Hemoglobins Humans Laboratories, Hospital Point-of-Care Systems ...
Prime-boost strategies combining DNA and inactivated vaccines confer high immunity and protection in cattle against bovine herpesvirus-1.
immunized twice with marker vaccines. Intradermal immunization of cattle with DNA vaccines promoted a Th2-biased immune response but also primed a cellular component that was further boosted by the ...
Virologic versus cytologic triage of women with equivocal Pap smears: a meta-analysis of the accuracy to detect high-grade intraepithelial neoplasia.
Volume 96, Issue 4, p.280-93 (2004) Keywords: ADOLESCENT Adult Aged Aged, 80 and over Bias (Epidemiology) Carcinoma, Squamous Cell Cervical Intraepithelial Neoplasia Cervix Uteri Confidence Intervals DNA, ...
Combination of analytical quality specifications based on biological within- and between-subject variation124
Issue Pt 6, Number 550, p.543- 550 (2002) Keywords: a Agreement an application article AS assessment at bias Bias (Epidemiology) Blood Chemical Analysis Clinical Combination Common Components concept ...