Topic overview

Start with the big picture

Measures of disease frequency help frame questions about the occurrence of health conditions in populations. Understanding this topic begins with recognizing that frequency measures are used to describe disease occurrence, while the choice and interpretation of a measure depend on the question being asked and the information available. This introduction places the topic within epidemiology and the broader chapter on measures of disease occurrence. The source snapshot does not specify particular measures, calculations, or examples, so those details are not stated here. The full lesson develops the topic further, providing a structured treatment of disease frequency and its role in epidemiological description.