How to calculate the crude birth rate?

To calculate the crude birth rate, you need to know the total number of live births in a specific time period (usually a year) and the total population at mid-year for the same time period.

The formula for calculating the crude birth rate is:

Crude Birth Rate = (Number of live births / Total population) x 1000

For example, if there were 400 live births in a year and the total population at mid-year was 10,000, the crude birth rate would be:

(400 / 10,000) x 1000 = 40

So, the crude birth rate in this example would be 40 births per 1000 people.

Crude Birth Rate (CBR)

The crude birth rate measures the number of live births occurring in a population per 1,000 people over a specific period, usually one year.

Formula:

CBR = (Number of live births / Mid-year population) x 1,000

Steps:

1. Gather Data: Collect data on the number of live births and the mid-year population. The mid-year population is estimated by adding the population at the beginning and end of the year and dividing by 2.

2. Calculate the Ratio: Divide the number of live births by the mid-year population.

3. Multiply by 1,000: Multiply the ratio by 1,000 to convert it to the rate per 1,000 people.

Example:

- Number of live births in 2023: 4,000,000
- Mid-year population in 2023: 300,000,000

CBR = (4,000,000 / 300,000,000) x 1,000 = 13.3

Therefore, the crude birth rate for the population in 2023 is 13.3 per 1,000 people.