Difference between crude birth rate and infant mortality rate rate
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Answer:
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).
In the generic form, mortality rates are calculated as:
{\displaystyle d/p\cdot 10^{n}} {\displaystyle d/p\cdot 10^{n}}
where d represents the deaths occurring within a given time period, p represents the size of the population in which the deaths occur and {\displaystyle 10^{n}} 10^{n}is a conversion factor from fraction to some other unit (such as multiplying by {\displaystyle 10^{3}} 10^{3}to get mortality rate per 1,000 individuals).
The crude birth rate is the number of live births per year per 1,000 mid-year population. Another term used interchangeably with birth rate is natality. When the crude death rate is subtracted from the crude birth rate, the result is the rate of natural increase (RNI). This is equal to the rate of population change (excluding migration).