Di Lu's research while affiliated with Georgetown University and other places

Publication (1)

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Evaluating the accuracy (ie, estimating the sensitivity and specificity) of new diagnostic tests without the presence of a gold standard is of practical meaning and has been the subject of intensive study for several decades. Existing methods use 2 or more diagnostic tests under several basic assumptions and then estimate the accuracy parameters vi...


... Since the true disease status is likely unknown, indirect methods are often used for the evaluation of diagnostic sensitivity and specificity. Methods and problems regarding the assumptions of such approaches have been widely discussed [10][11][12][13][14][15][16][17][18][19][20]. ...