In public health, a measure is defined as:

• A. A data point that describes healthcare costs.
• B. An indicator of health status or a health outcome, used synonymously with indicator.
• C. A plan to improve health.
• D. A random variable in a study.

Answer: (B)

In public health, a measure is a number that represents a health concept for a population—an indicator of health status or a health outcome. This means the measure is designed to quantify how healthy people are, or how well a health outcome is occurring in a population, so you can compare groups or track changes over time. Examples include life expectancy, infant mortality rate, and prevalence of a condition like obesity. These are used as indicators because they summarize health information in a way that supports monitoring and decision-making.

The option describing a data point about healthcare costs isn’t inherently a health status indicator, and the choice about a plan to improve health refers to an intervention rather than a measurement. The idea of a random variable in a study is a statistical concept used in analysis, not the defined health-status indicator itself. Therefore, the best way to define a measure in public health is as an indicator of health status or a health outcome.