2007-3-5南通大学公卫学院医学检验教研室1KEY POINTS: It It is is important important to to evaluate evaluate the the sensitivity, sensitivity, specificity, specificity, predictive predictive value value and and likelihood likelihood ratio of clinic diagnostic test.ratio of clinic diagnostic test. Evaluation Evaluation of of efficiency efficiency of of clinic clinic diagnostic diagnostic tests must base a gold standard method.tests must base a gold standard method.2007-3-5南通大学公卫学院医学检验教研室2 Predictive Predictive va