Abstract:
:Comparative studies of the accuracy of diagnostic procedures often use a paired design to gain in efficiency. Standard methods for analysing data from paired designs require complete observations. In many studies, however, one of the test results may be missing for some patients. In this paper, we propose a simple correction to the existing complete data methods to compare areas under ROC curves derived from paired designs. The approach makes it possible to use the entire available data set in carrying out the comparison, provided that the probability of having both tests does not depend on the test results. As an illustration, we apply our method to the analysis of data from prospective comparison of MRI and ultrasound in detecting periprostatic invasion.
journal_name
Stat Medjournal_title
Statistics in medicineauthors
Zhou XH,Gatsonis CAdoi
10.1002/(SICI)1097-0258(19960815)15:15<1687::AID-Ssubject
Has Abstractpub_date
1996-08-15 00:00:00pages
1687-93issue
15eissn
0277-6715issn
1097-0258pii
10.1002/(SICI)1097-0258(19960815)15:15<1687::AID-Sjournal_volume
15pub_type
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