Heather Gold a �crit :
(sensitivity+specificity)/2.
Has anyone heard of accuracy defined as
(prevalence*sensitivity+(1-prevalence)*specificity) ? This is like a
weighted average that incorporates prevalence and might be helpful
with a dichotomous diagnostic test (ie, rather than ROC). If so, is
there a standard depending on one's field, eg, medicine?
Thanks,
Heather
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Jean-Benoit Hardouin
Biostatisticien
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