Practical application of the sigma-metric run size nomogram for multistage bracketed statistical quality control analysis of eight enzymes

A checklist for critical appraisal of studies of biological variation

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Pharmacy, Biostatistics, Molecular Epidemiology +12

The quality of laboratory testing today: an assessment of sigma metrics for analytic quality using performance data from proficiency testing surveys and the CLIA criteria for acceptable performance.

James O. Westgard, Sten Westgard · PubMed · 2006 · 115 citations

Management, Quality Management, Good Laboratory Practice +15

The Quality of Laboratory Testing Today

James O. Westgard, Sten Westgard · American Journal of Clinical Pathology · 2006 · 111 citations

Medicine, Internal Medicine, Clinical Biochemistry +14

Biological variation database: structure and criteria used for generation and update

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Pharmacy, Biostatistics, Noncompartmental Analysis +12

Assessing the Impact of the Frequency of Quality Control Testing on the Quality of Reported Patient Results

Curtis A. Parvin · Clinical Chemistry · 2008 · 72 citations

Management, Quality Management, Performance Measurement +9