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The usefulness of a diagnostic test is generally assessed by calculating the sensitivity and specificity, or the predictive value positive and predictive value negative of the test. When subjects are monitored periodically for evidence of disease, these calculations must incorporate the varying amounts of information per individual. If in addition, the test results lie on a continuous scale, these quantities vary with the cutoff value (cutpoint) used to define a positive test. They are usually calculated for a spectrum of potential cutpoints in order to produce receiver-operator characteristic curves. In this paper we use a partial likelihood solution to the discrete logistic model in order to obtain estimates of the diagnostic test indices and to provide a significance test when the diagnostic test is administered repeatedly to individuals.
E R DeLong, and
W B Vernon, and
R R Bollinger
March 1980,
Arquivos brasileiros de cardiologia,
E R DeLong, and
W B Vernon, and
R R Bollinger
January 1987,
Boletin medico del Hospital Infantil de Mexico,
E R DeLong, and
W B Vernon, and
R R Bollinger
January 2008,
Otolaryngologia polska = The Polish otolaryngology,
E R DeLong, and
W B Vernon, and
R R Bollinger
May 2009,
Journal of the American Academy of Audiology,
E R DeLong, and
W B Vernon, and
R R Bollinger
January 1989,
Acta chirurgica Belgica,
E R DeLong, and
W B Vernon, and
R R Bollinger
October 2004,
Allergy,
E R DeLong, and
W B Vernon, and
R R Bollinger
July 2006,
Ceska gynekologie,
E R DeLong, and
W B Vernon, and
R R Bollinger
January 1989,
BMJ (Clinical research ed.),
E R DeLong, and
W B Vernon, and
R R Bollinger
January 1990,
Das Offentliche Gesundheitswesen,
E R DeLong, and
W B Vernon, and
R R Bollinger
November 1988,
BMJ (Clinical research ed.),
