Week 11: Measures of Mortality

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.

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. The crude death rate is calculated as the "total number of deaths during a given time interval" divided by the "mid-year population", As of 2020, for instance, the CIA estimates that the crude death rate globally will be 7.7 deaths per year per 1,000 persons in a population.

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