Posted by Sten Westgard, MS
Here's an eye-opening report from the Office of Inspector General from the Department of Health and Human Services: Adverse Events in Hospitals: National Incidence Among Medicare Beneficiaries
So what's your best guess on the frequency of adverse events?
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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
Why do some numbers and statistics in the laboratory attract more attention than others?
While we consider ourselves scientists who make decisions based on rational cost-benefit analyses, an objective look at some of our priorities often reveals the opposite. Labs often make decisions and set priorities based on the emotions of the moment, rather than a cold analysis of the data.
Let's put it another way. There is an infamous quotation attributed to Stalin: "When one man dies it is a tragedy, when thousands die it's statistics."
Do labs respond more to individual tragedies or their own statistics?
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Laboratory Quality Control Based on Risk Management
Posted by James O. Westgard, Sten A. Westgard
Posted by Sten Westgard, MS
One more shot at error rates! At the IFCC Berlin conference, there was an intriguing abstract about the use of Quality Design/Planning tools in the laboratory:
Abstract #1062: Efficiency of Analytical Qualit yControl with Various Quality Planning Tools in Thai Clinical Laboratory. K. Sirisali, S. Manochiopinj, S. Sirisali.
How high do you think out-of-control rates can go?
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Posted by Sten Westgard, MS
Earlier we discussed error rate issues at the Point-of-Care. But we didn't want to leave the "regular" laboratory out of the fun, so here's a study of error rates that came out in 2010:
Evaluation of errors in a clinical laboratory: a one-year experience, Goswami B, Singh B, Chawla R, Mallika V, CCLM 2010;48(1):63-66.
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A new study in Clinical Chemistry investigated the errors rates for Point-of-Care (POC) devices:
Quality Error Rates in Point-of-Care Testing, O'Kane MJ, McManus P, McGowan N, Lynch PL, Clin Chem 2011 Sep;57(9):1267-1.
Can you guess what the error rates were?
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