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Items: 1 to 50 of 109

1.

Mistaken assumptions drive new Six Sigma model off the road.

Westgard S, Bayat H, Westgard JO.

Biochem Med (Zagreb). 2019 Feb 15;29(1):010903. doi: 10.11613/BM.2019.010903. Epub 2018 Dec 15.

2.

Establishing Evidence-Based Statistical Quality Control Practices.

Westgard JO, Westgard SA.

Am J Clin Pathol. 2018 Dec 5. doi: 10.1093/ajcp/aqy158. [Epub ahead of print]

PMID:
30517600
3.

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.

4.

Special issue on Six Sigma metrics - experiences and recommendations.

Westgard S, Bayat H, Westgard JO.

Biochem Med (Zagreb). 2018 Jun 15;28(2):020301. doi: 10.11613/BM.2018.020301. No abstract available.

5.

Error Methods Are More Practical, But Uncertainty Methods May Still Be Preferred.

Westgard JO.

Clin Chem. 2018 Apr;64(4):636-638. doi: 10.1373/clinchem.2017.284406. Epub 2018 Jan 8. No abstract available.

PMID:
29311055
6.

Planning Risk-Based SQC Schedules for Bracketed Operation of Continuous Production Analyzers.

Westgard JO, Bayat H, Westgard SA.

Clin Chem. 2018 Feb;64(2):289-296. doi: 10.1373/clinchem.2017.278291. Epub 2017 Nov 2.

7.

Selecting a Risk-Based SQC Procedure for a HbA1c Total QC Plan.

Westgard SA, Bayat H, Westgard JO.

J Diabetes Sci Technol. 2018 Jul;12(4):780-785. doi: 10.1177/1932296817729488. Epub 2017 Sep 14.

8.

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.

PMID:
28153374
9.

Six Sigma Quality Management System and Design of Risk-based Statistical Quality Control.

Westgard JO, Westgard SA.

Clin Lab Med. 2017 Mar;37(1):85-96. doi: 10.1016/j.cll.2016.09.008. Epub 2016 Dec 22. Review.

PMID:
28153372
10.

A Total Quality-Control Plan with Right-Sized Statistical Quality-Control.

Westgard JO.

Clin Lab Med. 2017 Mar;37(1):137-150. doi: 10.1016/j.cll.2016.09.011. Epub 2016 Dec 20. Review.

PMID:
28153361
11.

Measuring Analytical Quality: Total Analytical Error Versus Measurement Uncertainty.

Westgard JO, Westgard SA.

Clin Lab Med. 2017 Mar;37(1):1-13. doi: 10.1016/j.cll.2016.09.001. Epub 2016 Dec 20. Review.

PMID:
28153359
12.

Useful measures and models for analytical quality management in medical laboratories.

Westgard JO.

Clin Chem Lab Med. 2016 Feb;54(2):223-33. doi: 10.1515/cclm-2015-0710.

13.

Quality control review: implementing a scientifically based quality control system.

Westgard JO, Westgard SA.

Ann Clin Biochem. 2016 Jan;53(Pt 1):32-50. doi: 10.1177/0004563215597248. Epub 2015 Jul 6. Review.

PMID:
26150675
14.

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.

Transfus Apher Sci. 2015 Apr;52(2):245-51. doi: 10.1016/j.transci.2015.02.014. Epub 2015 Feb 14. Review.

PMID:
25765135
15.

The role of uncertainty regarding the results of screening immunoassays in blood establishments.

Pereira P, Westgard JO, Encarnação P, Seghatchian J, de Sousa G.

Transfus Apher Sci. 2015 Apr;52(2):252-5. doi: 10.1016/j.transci.2015.02.015. Epub 2015 Feb 14. Review.

PMID:
25754470
16.

Assessing quality on the Sigma scale from proficiency testing and external quality assessment surveys.

Westgard JO, Westgard SA.

Clin Chem Lab Med. 2015 Sep 1;53(10):1531-5. doi: 10.1515/cclm-2014-1241.

PMID:
25719323
17.

Scheme for the selection of measurement uncertainty models in blood establishments' screening immunoassays.

Pereira P, Westgard JO, Encarnação P, Seghatchian J, de Sousa G.

Transfus Apher Sci. 2015 Feb;52(1):42-7. doi: 10.1016/j.transci.2014.12.018. Epub 2014 Dec 29. Review.

PMID:
25620757
18.

Evaluation of the measurement uncertainty in screening immunoassays in blood establishments: computation of diagnostic accuracy models.

Pereira P, Westgard JO, Encarnação P, Seghatchian J.

Transfus Apher Sci. 2015 Feb;52(1):35-41. doi: 10.1016/j.transci.2014.12.017. Epub 2015 Jan 6. Review.

PMID:
25617905
20.

Quality control (QC) clinic. Preface.

Westgard JO, Westgard S.

Clin Lab Med. 2013 Mar;33(1):xi-xii. doi: 10.1016/j.cll.2012.11.010. Epub 2012 Dec 20. No abstract available.

PMID:
23331738
21.

Statistical quality control procedures.

Westgard JO.

Clin Lab Med. 2013 Mar;33(1):111-24. doi: 10.1016/j.cll.2012.10.004. Epub 2012 Dec 20.

PMID:
23331732
22.

Perspectives on quality control, risk management, and analytical quality management.

Westgard JO.

Clin Lab Med. 2013 Mar;33(1):1-14. doi: 10.1016/j.cll.2012.10.003. Epub 2012 Dec 20. Review.

PMID:
23331725
23.

Managing quality vs. measuring uncertainty in the medical laboratory.

Westgard JO.

Clin Chem Lab Med. 2010;48(1):31-40. doi: 10.1515/CCLM.2010.024.

PMID:
19919330
24.

Use and interpretation of common statistical tests in method comparison studies.

Westgard JO.

Clin Chem. 2008 Mar;54(3):612. doi: 10.1373/clinchem.2007.094060. No abstract available.

26.

Designing quality control for neonatal screening assays.

Suolinna EM, Torresani TE, Westgard JO.

Southeast Asian J Trop Med Public Health. 2003;34 Suppl 3:103-6.

PMID:
15906710
27.

Design of internal quality control for reference value studies.

Westgard JO.

Clin Chem Lab Med. 2004;42(7):863-7.

PMID:
15327024
28.

The truth about quality: medical usefulness and analytical reliability of laboratory tests.

Westgard JO, Darcy T.

Clin Chim Acta. 2004 Aug 2;346(1):3-11.

PMID:
15234630
29.

Internal quality control: planning and implementation strategies.

Westgard JO.

Ann Clin Biochem. 2003 Nov;40(Pt 6):593-611.

PMID:
14629798
30.

Evaluation of rule-based autoverification protocols.

Crolla LJ, Westgard JO.

Clin Leadersh Manag Rev. 2003 Sep-Oct;17(5):268-72.

PMID:
14531220
31.

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.

Clin Chem Lab Med. 2001 Jul;39(7):589-95.

PMID:
11522103
32.
33.

The need for a system of quality standards for modern quality management.

Westgard JO.

Scand J Clin Lab Invest. 1999 Nov;59(7):483-6.

PMID:
10667684
34.

Points of care in using statistics in method comparison studies.

Westgard JO.

Clin Chem. 1998 Nov;44(11):2240-2. No abstract available.

36.

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.

Clin Chem. 1997 Sep;43(9):1618-21.

37.

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.

PMID:
9230452
38.
39.
41.
42.

Matrix effects and the performance and selection of quality-control procedures to monitor PO2 measurements.

Olafsdottir E, Westgard JO, Ehrmeyer SS, Fallon KD.

Clin Chem. 1996 Mar;42(3):392-6.

43.

A method evaluation decision chart (MEDx chart) for judging method performance.

Westgard JO.

Clin Lab Sci. 1995 Sep-Oct;8(5):277-83.

PMID:
10172753
44.

Allowable imprecision for laboratory tests based on clinical and analytical test outcome criteria.

Westgard JO, Seehafer JJ, Barry PL.

Clin Chem. 1994 Oct;40(10):1909-14.

46.

Selecting appropriate quality-control rules.

Westgard JO.

Clin Chem. 1994 Mar;40(3):499-501. No abstract available.

47.

A program for assessing statistical QC procedures.

Westgard JO.

MLO Med Lab Obs. 1994 Feb;26(2):55, 58-60. No abstract available.

PMID:
10171792
48.

Establishing and evaluating QC acceptability criteria.

Westgard JO, Quam EF, Barry PL.

MLO Med Lab Obs. 1994 Feb;26(2):22-6. No abstract available.

PMID:
10171791
49.

Cholesterol--a model system to relate medical needs with analytical performance.

Wiebe DA, Westgard JO.

Clin Chem. 1993 Jul;39(7):1504-12; discussion 1512-3. Review.

50.

Analytical goal-setting for monitoring patients when two analytical methods are used.

Petersen PH, Fraser CG, Westgard JO, Larsen ML.

Clin Chem. 1992 Nov;38(11):2256-60. Review.

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