Z transformation is the gold standard for computing the sigma metric
Author:
Publisher
Elsevier BV
Subject
Clinical Biochemistry,General Medicine
Reference3 articles.
1. Utilizing global data to estimate analytical performance on the Sigma scale: a global comparative analysis of methods, instruments, and manufacturers through external quality assurance and proficiency testing programs;Westgard;Clin. Biochem.,2016
2. A new approach to calculating the Sigma Metric in clinical laboratories;Coskun;Accred. Qual. Assur.,2015
3. Sigma metric or defects per million opportunities (DPMO): the performance of clinical laboratories should be evaluated by the Sigma metrics at decimal level with DPMOs;Coskun;Clin. Chem. Lab. Med.,2016
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1. Measurement uncertainty in laboratory medicine: the bridge between medical and industrial metrology;Turkish Journal of Biochemistry;2019-04-01
2. Sigma metric revisited: True known mistakes;Biochemia medica;2018-12-24
3. Comparison between Sigma metrics in four accredited Egyptian medical laboratories in some biochemical tests: an initiative towards sigma calculation harmonization;Biochemia Medica;2018-06-15
4. Practical application of biological variation and Sigma metrics quality models to evaluate 20 chemistry analytes on the Beckman Coulter AU680;Clinical Biochemistry;2016-11
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