Public Health

Question 1

incidence rate

Answer 1

number of NEW cases of a disease occurring in a population during a specific period of time/number of persons EXPOSED to risk of developing the disease during that period of time

Question 2

negative predictive value

Answer 2

test of true negatives - proportion of those who test negative who actually do not have the disease

Question 3

positive predictive value

Answer 3

test true positives - proportion of those who test positive who actually have the disease

Question 4

prevalence rate

Answer 4

number of cases of a disease ipresent in a population at a specific point in time/number of persons at risk of having the disease at that point in time

Question 5

primary prevention

Answer 5

stopping a disease before it starts

Question 6

secondary prevention

Answer 6

stopping a disease from being as bad as it could be

Question 7

sensitivity

Answer 7

test true positives (proportion of those who have the disease who are correctly identified by a positive test)

Question 8

specificity

Answer 8

test true negatives (proportion of those who do not have the disease who are correctly identified by a -ve test)

Question 9

tertiary prevention

Answer 9

stopping later complications from developing

Question 10

yield

Answer 10

number of previously undiagnosed cases picked up by a screening test or programme