The formula for calculating the crude death rate is

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RRB Staff Nurse Previous Year Paper [Held on 20 July 2019 (Shift II)]
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  1. Deaths in January x 12/mid-year population x 100
  2. No of deaths during the year/mid-year population x 1000
  3. Total No of deaths due to a particular disease/Total no of cases due to same disease x 100
  4. No of deaths from the specific disease in a year/total deaths from all causes in that year x 100

Answer (Detailed Solution Below)

Option 2 : No of deaths during the year/mid-year population x 1000
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RRB Staff Nurse Previous Year Paper [Held on 20 July 2019 Shift II]
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Detailed Solution

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Explanation:

  • Crude Death Rate: indicates the number of death per 1000 mid-year population.
  • CDR is calculated as:
  • CDR =   D x K  divided by P
  1. D=total number of deaths registered during the calendar year
  2. P= total mid-year estimated population or the total population of the middle of the year 
  3. K=a constant usually taken as1,000

Key Points

  • Natural population growth happens because of the following
    1. Birth Rate
    2. Death Rate
  • The natural increase in birth rate and death rate causes natural population growth.
  • Basic components of population change-
    • The fertility rate in women
    • Mortality
    • Migration
  • Natural increase is the difference between the no. of births and deaths in the population.
  • Crude Birth Rate - It is the total number of live births per 1,000 population divided by the length of the period in years. 
    • current rate - 18.2births/1000
  • Crude Death Rate - the ratio of deaths to the population of a particular area or during a particular period of time, usually calculated as the number of deaths per one thousand people per year.
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