Public Health

Question 1

Give a principles of a good screening test from each of the 4 areas of Wilsons and Jungner criteria.

Answer 1

1. Condition is a serious health problem/ aetiology well-understood/ detectable early stage
2. Treatment should be accepted/ available facilities for diagnosis and treatment
3. Test should be suitable/ acceptable to patients/ intervals for repeating the test are determined
4. Benefits outweigh the costs/ agreed policy of who to treat.

Question 2

Define sensitivity.

Answer 2

The proportion of people who have the disease who are correctly identified by the screening test. = TP/ (TP+FN).