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July 8, 1998

Accuracy of Physicians' Office Laboratory Results

Author Affiliations

Copyright 1998 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.1998

JAMA. 1998;280(2):129-132. doi:10-1001/pubs.JAMA-ISSN-0098-7484-280-2-jac80010

To the Editor.—The 2 articles1,2 that describe PT performance in POLs deserve comment. While no one expected POLs to perform at the same level of proficiency as the largest and best instrumented laboratories in the country, the article by Dr Stull and colleagues1 showed that POLs' aggregate PT performance was only 4% below that of hospital and independent laboratories (91% vs 97%, respectively). The data in the Hurst et al2 study suggest that the California study is skewed in some fashion since the aggregate performance of POLs (summed for both groups listed in Table 3 of the study) is 82% compared with 92% for non-POLs, which is far below that found in the national database used by Stull et al.1

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