The rate adjusted to allow for the age distribution of the populations
ref: Park&;s 23rd edition pg 59 SMR (Standardised moality ratio): (usually expressed as percentage) of the total numkber of deaths that occur inthe study group to the number of deaths that would have been expected to occur if that study group had experienced death rates of a standard population (or reference poplulation).
Perinatal moality rate
Crude moality rate
Feility rate
Age standardized moality rate
Epidemiology