Public Health

Question 1

what is “health”?

Answer 1

a state of complete physical, mental and social well-being - not just absence of disease

Question 2

give an example of primary, secondary and tertiary prevention?

Answer 2

1. vaccinations
2. screening, check ups
3. rehabilitation

Question 3

whats in the 6 in 1 vaccine?

Answer 3

diptheria
tetanus
pertussis
polio
Hib
Hep B

Question 4

Give some wilson and Junger criteria

Answer 4

• important health problem
• understood natural history
• detectable at early stage
• acceptable test
• repeat the test

Question 5

what is sensitivity

Answer 5

proportion of people with the disease who are correctly identified by the screening process

Question 6

what is specificity

Answer 6

the proportion or people without the disease who are correctly excluded by the screening process

Question 7

positive predictive value

Answer 7

proportion of those who screened positive actually do have the disease

Question 8

negative predictive value

Answer 8

proportion of people with a negative result who do not have the disease

Question 9

what is prevalence

Answer 9

all existing cases at a point in time

Question 10

what is incidence

Answer 10

new cases in a population

Question 11

what is a cohort study?

Answer 11

prospective study, looking forward

gives relative risk

Question 12

what is a case control?

Answer 12

gives odds ratio

retrospective, looking at an exposure - start with the disease