define crude birth rate suppose the total mid population of a city in 2011 AD was 2,60,000 and the total live births during the same year were 8,000. calculate crude birth rate
Answers
Answer:
CRUDE BIRTH RATE
1. Definition:
CRUDE BIRTH RATE is the number of resident live births for a specified geographic
area (nation, state, county, etc.) during a specified period (usually a calendar year)
divided by the total population (usually mid-year) for that area and multiplied by 1,000.
2. Calculation:
(Number of resident live births / Number of total population) x 1,000
Total Resident Live Births X 1,000
Total Population
3. Examples:
180,000 live births in calendar year 2005 among state residents
12,300,000 estimated population in calendar year 2005 for state residents
(180,000/12,300,000) x 1,000 = 14.6 live births per 1,000 state residents in 2005
4. Technical Notes:
• While the Crude Birth Rate (CBR) is a basic measure of fertility, it is only
occasionally used as a public health measure in the US. There are other fertility
measures that are more population-at-risk specific and more comparable across
time and geography, such as the general fertility rate and the total fertility rate.
• The reason the CBR is “crude” is because the total population is represented in
the denominator, similar to the crude death rate for example.
• Obviously, the “population at risk” of giving birth to a live neonate is poorly
represented by the total population. As a result, the CBR is affected by the
demographic distribution of the population in the denominator, especially by sex
and age, but also by race or ethnicity category and other demographic
characteristics.
• Reporting of live births may differ by birthing facility or attendant at time of
birth. For example, a live birth can be interpreted and subsequently registered as a
fetal death or stillbirth when the neonate very briefly shows signs of life and
subsequently dies. In some countries, “live birth” may be defined differently than
in the U.S. (or not applied to the same degree in practice), which follows the
World Health Organization (WHO) definition.
• Sometimes live births do not become part of the official count of a state’s resident
live birth total because:
a)The birth to a state resident occurred in an area (often another country) for
which the state does not have a vital records exchange agreement
b) the birth to a state resident occurred in an area for which the state does have an
exchange agreement but it arrived at the state’s vital registration office too late for
inclusion in the state’s official count or
c) the live birth occurred in the state but simply was not registered in time (e.g.,
an at-home birth) for inclusion in the state’s official count. Also note that a