Proficiency testing in cytopathology and in other disciplines should be based on firm
statistical and scientific foundations, because test theory in general is a heavily statistical …

Thirty‐three years ago Penner advocated six criteria for the performance of proficiency
testing in cytopathology (PTC). Since that time, several further requirements have been …

In this issue, Nagy and Naryshkin1 present an analysis of the sta-tistical pitfalls of the
cytology proficiency testing (PT) program mandated by the Clinical Laboratory Improvement …

Although the goals of the standards drafted in the Clinical Laboratory Improvement
Amendments of 1988 (CLIA'88) are noble, certain elements of the cytology regulations …

Dear Dr. Bedrossian: Dr. Marshall Austin insists that proficiency testing in cytology is
worthless as a quality assurance method. 1+ 2 He believes that his point can be proved by …

With the recent introduction of nationwide proficiency testing in cytopathology (PTC),
reconsideration of several aspects of this controversial quality assurance method becomes …

Downloaded by: Google 66.249. 79.100-4/25/2023 4: 48: 56 AM lenges preventing
widespread implementation have included the inability to replicate normal working …

Data from the National Cytology Proficiency Testing Update show that as of January 31,
2006, 9% of 12,786 examinees failed the test on the first attempt. For the second attempt, the …

Experiences in a large-scale interlaboratory rescreening of Papanicolaou smears are
detailed, and the pros and cons of measuring proficiency in cytology are discussed. Despite …

Proficiency tests in cytology classify a certain proportion of cytologists inaccurately. Some
competent cytologists fail during the testing procedure (" false-negative proficiency test" or" …