Posted by Sten Westgard, MS
Attending the AACC/ASCLS convention predictably results in one frustration. Walking through the poster sections, you find that many of the method validation abstracts are only performing within-run precision studies.
What's so bad about that?
Repeat after me: it's not about the repeatability...
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Posted by Sten Westgard, MS
Posted by Sten Westgard, MS
A recent Clinical Laboratory Strategies article:Anchoring POC Quality in Clinical Decision-Making and the related study: Novel analysis of clinically relevant diagnostic errors in point-of-care devices, KM Shermock, MB Streiff, BL Pinto, P Kraus, an dPJ Pronovost, (J Thromb Haemost 2011;9:1769-1775) have an interesting observation about the use of the correlation coefficient to accept method performance.
They looked at Hemochron POC devices, analyzing 1518 paired INRs. The correlation between the POC and laboratory measurements ranged between 0.84 and 0.91.
The authors stated, "Traditional, quarterly, quality assurance studies emphasize correlation analysis." So this study has good news, right?
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Posted by Sten Westgard, MS
Posted by Sten Westgard, MS
Posted by Sten Westgard, MS
Posted by Sten Westgard, MS
Posted by Sten Westgard, MS
Sten Westgard, MS
Posted by Sten Westgard, MS
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For over 25 years, WESTGARD QC has provided the latest news, education, and tools in the quality control field. Our goal is to bring tools, technology and training into today's healthcare industry — by featuring QC lessons, QC case studies and frequent essays from leaders in the quality control area. This is also a reference source for quality requirements, including CLIA requirements for analytical quality. This website features the best explanation of the Multirule ("Westgard Rules") and how to use them. For laboratory and healthcare professionals looking for educational and reference material in the quality control field.
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