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Crude rate

Identifying and definitional attributes

Metadata item type:Help on this termGlossary Item
METeOR identifier:Help on this term327274
Registration status:Help on this termHealth, Standard 01/03/2005
Definition:Help on this term

The ratio of the number of events in the population being studied during a certain time period to the estimated population size midway through that time period.


Context:Help on this termPopulation health and health services research:
Required to calculate population rates, such as incidence rates, prevalence rates, mortality rates and health service utilisation rates.

Collection and usage attributes

Guide for use:Help on this term

R =d/n

R  is the crude rate for the population being studied,
d is the number of events for that population group,
n is the total population for that population group.

Comments:Help on this term

Crude rates are generally multiplied by 1,000 or 100,000 to avoid small decimal fractions. It is then called the crude rate per 1,000 or 100,000 population.

Source and reference attributes

Origin:Help on this term

Australian Institute of Health and Welfare

Reference documents:Help on this term

Textbooks of epidemiology, demography and biostatistics.

The presentation of formulae in this data element is based on the notation used in Armitage P & Berry G 1994. Statistical Methods in Medical Research. Oxford: Blackwell Scientific Publications.

See also Age-standardised rate

Relational attributes

Related metadata references:Help on this term

Supersedes Crude rate, version 1, Derived DE, NHDD, NHIMG, Superseded 01/03/2005.pdf (14.2 KB)

Metadata items which use this glossary item:Help on this term

Age-standardised rate Health, Standard 01/03/2005

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