Standarised moality rate is standardised for
Age
Disease
Region
A paicular time period
.rates are only comparable if the populations upon which they are based are comparable.age adjustment or"age standardisation removes the confounding effect of different age structures and yields a single standardized or adjusted rate by which the moality experience can be compared directly.the adjustment can also be made for sex,race,parity etc. ref:park&;s textbook,ed 22,pg no 56
Epidemiology