The frequency of rounds in a proficiency test: does it affect the performance of participants?

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Michael Thompson and Philip J. Lowthian


Abstract

A controlled experiment has been carried out to test whether the performance of participants in a proficiency test is improved as a result of doubling the frequency of distributing the test materials in the test. The performance of a randomly selected experimental group was compared with that of a corresponding control group after doubling the frequency of rounds in the experimental group over a period of two years. No statistically significant change in performance was detected.


References

  1. M. Thompson and R. Wood, Pure Appl. Chem., 1993, 65, 2123 CrossRef CAS.
  2. R. E. Lawn, M. Thompson and R. F. Walker, Proficiency Testing in Analytical Chemistry, The Royal Society of Chemistry, Cambridge, 1997 Search PubMed.
  3. ISO Guide 43, Proficiency Testing by Interlaboratory Comparisons, International Standards Organization, Geneva, Switzerland, 1997 Search PubMed.
  4. M. Thompson and P. J. Lowthian, unpublished data.
  5. Analytical Methods Committee, Analyst, 1989, 114, 1693 Search PubMed.
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