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Analytical Sigma metrics: A review of Six Sigma implementation tools for medical laboratories.
Westgard S, Bayat H, Westgard JO.
Biochem Med (Zagreb). 2018 Jun 15;28(2):020502. doi: 10.11613/BM.2018.020502. Review.
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Biochem Med (Zagreb). 2018 Jun 15;28(2):020301. doi: 10.11613/BM.2018.020301. No abstract available.
Error Methods Are More Practical, But Uncertainty Methods May Still Be Preferred.
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Planning Risk-Based SQC Schedules for Bracketed Operation of Continuous Production Analyzers.
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Selecting a Risk-Based SQC Procedure for a HbA1c Total QC Plan.
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Preface.
Westgard JO, Armbruster D, Westgard SA.
Clin Lab Med. 2017 Mar;37(1):xiii-xvii. doi: 10.1016/j.cll.2016.12.001. No abstract available.
Six Sigma Quality Management System and Design of Risk-based Statistical Quality Control.
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Clin Lab Med. 2017 Mar;37(1):85-96. doi: 10.1016/j.cll.2016.09.008. Epub 2016 Dec 22. Review.
A Total Quality-Control Plan with Right-Sized Statistical Quality-Control.
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Measuring Analytical Quality: Total Analytical Error Versus Measurement Uncertainty.
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Useful measures and models for analytical quality management in medical laboratories.
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Quality control review: implementing a scientifically based quality control system.
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Quality management in European screening laboratories in blood establishments: A view of current approaches and trends.
Pereira P, Westgard JO, Encarnação P, Seghatchian J, de Sousa G.
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The role of uncertainty regarding the results of screening immunoassays in blood establishments.
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Assessing quality on the Sigma scale from proficiency testing and external quality assessment surveys.
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Scheme for the selection of measurement uncertainty models in blood establishments' screening immunoassays.
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Evaluation of the measurement uncertainty in screening immunoassays in blood establishments: computation of diagnostic accuracy models.
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Analytical model for calculating indeterminate results interval of screening tests, the effect on seroconversion window period: a brief evaluation of the impact of uncertain results on the blood establishment budget.
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Quality control (QC) clinic. Preface.
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Clin Lab Med. 2013 Mar;33(1):xi-xii. doi: 10.1016/j.cll.2012.11.010. Epub 2012 Dec 20. No abstract available.
Statistical quality control procedures.
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Perspectives on quality control, risk management, and analytical quality management.
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Managing quality vs. measuring uncertainty in the medical laboratory.
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Use and interpretation of common statistical tests in method comparison studies.
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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.
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Designing quality control for neonatal screening assays.
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Design of internal quality control for reference value studies.
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The truth about quality: medical usefulness and analytical reliability of laboratory tests.
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Internal quality control: planning and implementation strategies.
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Evaluation of rule-based autoverification protocols.
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Clin Leadersh Manag Rev. 2003 Sep-Oct;17(5):268-72.
Models for combining random and systematic errors. assumptions and consequences for different models.
Petersen PH, Stöckl D, Westgard JO, Sandberg S, Linnet K, Thienpont L.
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Electronic quality control, the total testing process, and the total quality control system.
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The need for a system of quality standards for modern quality management.
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Points of care in using statistics in method comparison studies.
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Comparison of NCEP performance specifications for triglycerides, HDL-, and LDL-cholesterol with operating specifications based on NCEP clinical and analytical goals.
Fallest-Strobl PC, Olafsdottir E, Wiebe DA, Westgard JO.
Clin Chem. 1997 Nov;43(11):2164-8.
Quality control for qualitative assays: quantitative QC procedure designed to assure analytical quality required for an ELISA of hepatitis B surface antigen.
Green GA 4th, Carey RN, Westgard JO, Carten T, Shablesky L, Achord D, Page E, Le AV.
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QC Validator 2.0: a computer program for automatic selection of statistical QC procedures for applications in healthcare laboratories.
Westgard JO, Stein B, Westgard SA, Kennedy R.
Comput Methods Programs Biomed. 1997 Jul;53(3):175-86.
Automated selection of statistical quality-control procedures to assure meeting clinical or analytical quality requirements.
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Clin Chem. 1997 Feb;43(2):400-3. Review. No abstract available.
Design and assessment of average of normals (AON) patient data algorithms to maximize run lengths for automatic process control.
Westgard JO, Smith FA, Mountain PJ, Boss S.
Clin Chem. 1996 Oct;42(10):1683-8.
Laboratory precision performance: state of the art versus operating specifications that assure the analytical quality required by clinical laboratory improvement amendments proficiency testing.
Westgard JO, Bawa N, Ross JW, Lawson NS.
Arch Pathol Lab Med. 1996 Jul;120(7):621-5.
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Matrix effects and the performance and selection of quality-control procedures to monitor PO2 measurements.
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Allowable imprecision for laboratory tests based on clinical and analytical test outcome criteria.
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European specifications for imprecision and inaccuracy compared with operating specifications that assure the quality required by US CLIA proficiency-testing criteria.
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A program for assessing statistical QC procedures.
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Analytical goal-setting for monitoring patients when two analytical methods are used.
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Selection of measurement and control procedures to satisfy the Health Care Financing Administration requirements and provide cost-effective operation.
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