"Variation in Proficiency Testing Performance by Testing Site."

According to the authors' abstract of an article published in JAMA - Journal of the American Medical Association, "Context: Congress enacted the Clinical Laboratory Improvement Amendments of 1988 (CLIA) to promote uniform quality and standards among all testing sites in the United States. The performance indicators specified in the legislation are proficiency testing (PT) performance and periodic inspections. Objective: To evaluate variation in PT performance by type of testing facility during the first year of compulsory participation under CLIA. Setting: All 1994 PT score data electronically reported to the Health Care Financing Administration as a component...

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