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New Paper: Risk-Based QC Strategies with Six Sigma Nomograms

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Posted by Sten Westgard, MS

Proud to announce the publication of a new article in the latest issue (Volume 2, Issue 2) of the Journal of Applied Laboratory Medicine:

Planning Risk-Based Statistical Quality Control Strategies: Graphical Tools to Support the New Clinical and Laboratory Standards Institute C24-Ed4 Guidance

Hassan Bayat, Sten A. Westgard, James O. Westgard
DOI: 10.1373/jalm.2017.023192 Published August 2017
 
There's a new tool in town: the Six Sigma QC Frequency Nomogram.
 
SixSigmaQCFrequencyNomogram
Based on modeling of Curt Parvin, and extension of the work of Yago and Alcover, these Nomograms will allow laboratories to finally develop fully-quantified QC frequencies (or runs). As more of these papers are published, we will make more of these Nomograms available through the website.
 
Sigma-metrics now allows you to assess quality, choose the right number of controls, choose the right number of rules, AND now, choose the right frequency of running those controls.
 
That's a low of power packed into a useful metric.
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Muchas Gracias, Medellin!
Multisite Analysis of AST performance and goals

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Sten Westgard

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Thursday, 25 September 2025

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