Work out the measure

Exercise and reference answers

Questions

1. Answer

   5.3

   Question

   802 TB deaths and 15,075 new cases. Death-to-case ratio per 100?

2. Answer

   30.3

   Question

   30 of 99 potato salad eaters fell ill. Attack rate as a percentage?

3. Answer

   2.5

   Question

   16 new cases in 6,400 person-years. Rate per 1,000 person-years?

4. Answer

   40.7

   Question

   468 of 1,150 women took vitamins. Prevalence as a percentage?

5. Answer

   0.5

   Question

   3 deaths among 555 hepatitis A cases. Case-fatality percentage?

Instructions

Read each case, then key in the number the measure works out to.

Explanation