Crude Birth Rate
Total number of live births in a year for every 1,000 people in the society
Crude Birth Rate (CBR) is a demographic indicator that measures the number of live births per 1,000 people in a population in a particular year. This rate portrays the fertility level of a population. The formula for calculating the crude birth rate is as follows:
CBR = (number of live births / mid-year population) x 1,000
In simpler terms, it is the ratio between the number of live births and the population size multiplied by 1,000. CBR is an essential indicator for policymakers and researchers to determine the population growth rate, fertility rates, and family planning programs in a country.
Interpretation:
The crude birth rate may vary from country to country depending on social, economic, and cultural factors. For example, countries with a higher proportion of young women in the reproductive age group are expected to have higher crude birth rates. In contrast, countries with higher levels of education and contraceptive prevalence might have lower crude birth rates.
For example, if a country’s mid-year population is 10,000, and the number of live births that year is 200, the crude birth rate would be:
CBR = (200/10,000) x 1,000
CBR = 20
Therefore, the crude birth rate for this country is 20 live births per 1,000 people.
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