Screenings In Medicine Flashcards
1
Q
LR+ should be? LR-?
A
LR+ > 10
LR- < 0.1
2
Q
A valid test does what? A reliable test does what? What can be concluded from this?
A
Valid: accurately discern between those that do and don’t have the dx, ability to tell the truth
Reliability: ability of a test to give the same result on repeated uses, consistent
A valid test is always reliable, but a reliable test isn’t always valid.
3
Q
Regarding validity, what does internal vs external validity mean?
A
Internal: extent to which results accurately reflect what is being assessed
External: extent to which results are applicable to other populations not included in original study, does it have “generalizability”?
