1.Division of two numbers. Time is always in the denominator Years of potential life lost

2. Division of two unrelated numbers. D Survival rate

3. Division of two related numbers. The numerator is a subset of denominator Proportion

4. Number of living cases per number of cases of disease. Prevalence

5. Measures existing cases in the total population. It is the proportion of the total population that is diseased.

6. Number of years that an individual was expected to live beyond his or her death

Matching question #3

1. The excess rate or risk of disease in the total population Population rate or risk difference

2. Individuals with a particular characteristic May also be called the index group. Rate or risk difference UDD Exposed group

3. Absolute measure of comparison. It measures the excess rate or risk of disease in the exposed or total population