Diagnostic accuracy is often measured using several statistical metrics:
Sensitivity: The proportion of true positives correctly identified by the test. Specificity: The proportion of true negatives correctly identified by the test. Positive Predictive Value (PPV): The probability that subjects with a positive test truly have the disease. Negative Predictive Value (NPV): The probability that subjects with a negative test truly do not have the disease. Accuracy: The overall proportion of true results (both true positives and true negatives) in the population.
