data item Negative Predictive Value of Diagnostic Test Negative Predictive Value of Diagnostic Test The likelihood that an individual with a negative test result is truly unaffected and/or does not have the particular gene mutation in question. NPV negative predictive value C1513918 C41390 Negative_Predictive_Value_of_Diagnostic_Test Quantitative Concept The probability that an individual is not affected with the condition when a negative test result is observed. This measure of accuracy should only be used if the data on the prevalence of condition of interest in given population is available. NPVDT can be determined by calculating: number of true negative results divided by the sum of true negative results plus number of false negative results. https://pubmed.ncbi.nlm.nih.gov/32541893/ Negative Predictive Value of Diagnostic Test