School
of Nursing and Academic Division of Midwifery
RLO: Positive and Negative Predictive Value of Diagnostic Tests
Resources
| Title/link | Description |
|---|---|
| Sensitivity and Specificity of Diagnostic Tests | This RLO explains how diagnostic test accuracy is described by the terms sensitivity and specificity. Sensitivity describes the accuracy of the test in detecting disease. Specificity describes the accuracy of the test in detecting health. |
Glossary
- Positive predictive value (PPV): the proportion of those with a positive test result who actually have disease
- Negative predictive value (NPV): the proportion of those with a negative test result who do not have disease
- False positive: a positive test result in a patient without disease
- False negative result: a negative test result in a patient with disease
- Reference standard: the presence or absence of disease determined by approved methods
- Prevalence: the amount of a particular disease in a population at a given point in time
RLO Transcript (Rich Text Format, 23kb)
© 2006 Graduate Entry Medical School, University of Nottingham
Developer: Caroline Burton
Content author: Elaine Bentley
RLO released: 2nd February, 2007
Page last updated: 2 February, 2007