preventative medicine 2

Question 1

what are one of the major cons of screening.

Answer 1

the results are not always right because you can get false positive, true positive, false negative and true negative

Question 2

define positive predictive

Answer 2

the proportion of those who test positive who actually have the disease.

Question 3

define negative predicative

Answer 3

the portion of those who test negative who actually don’t have the disease.

Question 4

define sensitivity

Answer 4

is the portion of people with the disease who are identified as having it by a positive test.

Question 5

define specificity

Answer 5

portion of people without the disease who are correctly reassured by a negative test.

Question 6

what are the main benefits of a high sensitivity test

Answer 6

maximise identification of diseases.
relatively few false negatives.
Lots of false positives

Question 7

what are the main benefits of high specificity

Answer 7

tend to detect only people with the disease
relatively few false positives
detect few people who are at little risk.

Question 8

limitations of screening

Answer 8

Can have false positive results, or false negative results.

Not a fool proof process.