Lecture 3: Understanding the Data-- Measures of Frequency and Association

These flashcards cover key concepts related to measures of frequency and association in epidemiology as discussed in Lecture 3.

Prevalence

The proportion of a population with a particular health condition or disease at a specified time.

Incidence proportion

The proportion of a population newly developing a disease over a specified period of time; often used interchangeably with risk.

Case Fatality Rate (CFR)

The proportion of people who die from a specified disease among all individuals diagnosed with that disease over a certain period.

Risk ratio

The ratio of the risk in the exposed group to the risk in the unexposed group.

Odds ratio

The ratio of the odds in the exposed group to the odds in the unexposed group.

Measures of association

Calculations that explain the relationship between exposure and disease outcomes.

Risk difference

The difference between the risk in the exposed group and the risk in the unexposed group.

Rate difference

The difference between the rate in the exposed group and the rate in the unexposed group.

Incident Rate

The number of newly developing cases per unit of person-time during follow-up.

Prevalence odds

Calculated as prevalence divided by (1-prevalence).