Population (epidemiology)

English: Population

Population is defined by exact definitions of its objects. Objects of a population are given by enumeration or by explicit rule (for example given common property) that enables us to decide for any object whether belongs to given population or not (e.g.: everybody in a town, all male workers in a factory, everybody with hypertension).

A population can be finite or infinite. Finite populations are, for example, demographic populations. Population can also be considered as an abstract idea of a collection of objects. These objects are described by variables:

• Qualitative variables: Properties that cannot be measured but only described in words (family status, level of pain).
• Quantitative variables: Can be measured and expressed as a number (weight, BP, BMI).

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• Population
• Descriptive Studies
• Analytical Studies

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• BENCKO CHARLES UNIVERSITY, PRAGUE 2004, 270 P, V, et al. Hygiene and epidemiology. Selected Chapters. 2nd edition. Prague. 2008. ISBN 9788024607931.