Screening Flashcards
1
Q
Define sensitivity.
A
The proportion of true positives (individuals who have the condition being screened for are correctly identified).
2
Q
Define specificity.
A
The proportion of true negatives (individuals who don’t have the condition are correctly screened).
3
Q
What gives a false negative result?
A
Low sensitivity - high number of positives missed.
4
Q
What gives a false positive result?
A
Low specificity - high number of true negatives missed.
5
Q
Define positive predictive value.
A
Chance that a person will have the disease after a positive screening test.
6
Q
Define negative predictive value.
A
Chance that a person won’t have the disease after a negative screening test.
