Diagnostic accuracy is measured using several statistical parameters:
- Sensitivity: The ability of a test to correctly identify those with the disease (true positive rate). - Specificity: The ability of a test to correctly identify those without the disease (true negative rate). - Positive Predictive Value (PPV): The probability that a person with a positive test result actually has the disease. - Negative Predictive Value (NPV): The probability that a person with a negative test result does not have the disease.
