Abstract:
:The purpose of this paper is to show that the sensitivity and specificity estimates obtained by 'discrepant analysis' are biased. Discrepant analysis is a widely used technique that attempts to provide estimates of sensitivity and specificity in the presence of an imperfect gold standard. Many researchers have applied this technique to estimate the sensitivity and specificity of DNA-amplification tests for Chlamydia trachomatis such as the plasmid based ligase chain reaction (LCR) and polymerase chain reaction (PCR) tests. Moreover, the June 1993 package insert of the PCR AMPLICOR Chlamydia trachomatis test contains estimates of sensitivity and specificity based on 'discrepant analysis'. Even if one employs a perfect test to resolve the discrepant results, discrepant analysis estimates of test sensitivity and specificity remain biased. Thus, one should not adopt this technique to evaluate the performance of a diagnostic test.
journal_name
Stat Medjournal_title
Statistics in medicineauthors
Hadgu Adoi
10.1002/(sici)1097-0258(19970630)16:12<1391::aid-ssubject
Has Abstractpub_date
1997-06-30 00:00:00pages
1391-9issue
12eissn
0277-6715issn
1097-0258pii
10.1002/(SICI)1097-0258(19970630)16:12<1391::AID-Sjournal_volume
16pub_type
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