Diagnostic Testing Flashcards
Willet - Sensitivity vs Specificity - ROC Curve - Likelihood Ratios
1
Q
In regards to Diagnostic Testing, Sensitivity tests for _____
A
People who have the disease
2
Q
In regards to Diagnostic Testing, Specificity tests for ______
A
People who don’t have the disease
3
Q
Post-Test Probabilty (PPV) formula
A
TP/ (TP+FP)
4
Q
Three Diagnostic things needed to confirm disease (Ex: Lyme)
A
- Sensitivity
- Specificity
- Pre-Test Prob
5
Q
Likelihood ratio for positive test
A
(+ result) with disease/(+ result without disease)
“Sensitivity/(1-Specificity)” because normally specificity wants to find a negative result.
6
Q
Likelihood ratio for negative tiest
A
(- result) with disease/ (- result) without disease
“(1-Sense)/Spec” because normally sensitivity wants to find positive result
