rate

Mortality rate, or death rate, is a measure of the number of deaths (in general, or due to a specific cause) in a particular population, scaled to the size of that population, per unit of time. Mortality rate is typically expressed in units of deaths per 1,000 individuals per year; thus, a mortality rate of 9.5 (out of 1,000) in a population of 1,000 would mean 9.5 deaths per year in that entire population, or 0.95% out of the total. It is distinct from "morbidity", which is either the prevalence or incidence of a disease, and also from the incidence rate (the number of newly appearing cases of the disease per unit of time).An important specific mortality rate measure is the crude death rate, which looks at mortality from all causes in a given time interval for a given population. As of 2020, for instance, the CIA estimates that the crude death rate globally will be 7.7 deaths per 1,000 persons in a population per year. In a generic form, mortality rates can be seen as calculated using



(
d

/

p
)
⋅

10

n




{\displaystyle (d/p)\cdot 10^{n}}
, where d represents the deaths from whatever cause of interest is specified that occur within a given time period, p represents the size of the population in which the deaths occur (however this population is defined or limited), and




10

n




{\displaystyle 10^{n}}
is the conversion factor from the resulting fraction to another unit (e.g., multiplying by




10

3




{\displaystyle 10^{3}}
to get mortality rate per 1,000 individuals).

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