Work out age standardised rate instantly with clear inputs, formula shown and shareable results.
Applies direct standardisation across two age strata: the stratum-specific rates are weighted by the standard population structure rather than the local one.
Direct standardisation
ASR = sum of (stratum rate x standard population weight); the crude rate uses the local weights instead
The WHO World Standard, European Standard or a national reference; rates are only comparable if the same standard is used.
It demonstrates the arithmetic transparently; a full analysis uses five-year age bands with the same weighted-sum method.