Write down the formula to compute crude death rate.

1. Vital Statistics:

It is a branch of Demography, which is the science applied to the analysis and interpretation of numerical facts regarding vital events.

2. Collection of data vital events:

(i) Civil Registration System:

Civil Registration System is the most common method of collecting information on vital events.

(ii) Census or Complete Enumeration method:

Census is conducted in most countries at intervals of ten years.

(iii) Survey method:

Survey records help to provide Vital Statistics for that region only.

(iv) Sample Registration System:

Sample Registration System vital rates are required to monitor population growth.

(v) Analytical method:

Population estimates of any vital event at a given time can be obtained without ad hoc surveys applying analytical methods.

3. Measurements of Mortality rate :

(i) $\text{Crude death rate}=\frac{\text{No.of live deaths in the popaulation during the given period}}{\text{Total number of persons in the population or community during the given period}}\times 1000$

(ii) $\text{Specific Death Rate}=\frac{\text{No.of deaths in a specific section of the population during the given period}}{\text{Total number of persons in the population or community during the given period}}\times 1000$

(iii) $\text{Infant Mortality Rate}=\frac{\text{No.of infant deaths in a population during the given period}}{\text{Number of live births in the population during the given period}}\times 1000$

4. Cohort:

It is a group of individuals who born at the same time and experienced the same mortality conditions.

5. Life table:

A life table exhibits the number of persons living and dying at each age, on the basis of the experience of a cohort.

6. Methods of Fertility rates:

(i) $\text{Crude Birth Rate}=\frac{\text{No.of live births in the population during the given period}}{\text{Total no.of women at the reproductive age in the population during the given period}}\times 1000$

(ii) $\text{General Fertility Rate}=\frac{\text{No.of live births occurred in the population during the given periodring the given period}}{\text{Total number of women at the reproductive age in the population during the given period}}\times 1000$

(iii) $\text{Specific Fertility Rate}=\frac{\text{No. of live births to the women in the reproductive age of specific section in given period}}{\text{Total no. of women in the reproductive age groups of the specific section in given period}}\times 1000$

7. Crude rate of natural increase:

$\text{Crude Rate of Natural Increase}=\text{(Crude Birth Rate-Crude DeathRate)}$

8. Pearl's vital index:

_{^{$\text{Pearle's vital index}=\frac{\text{crude birth rate}}{\text{crude death rate}}\times 100$}}

9. Official statistics:

The statistical information collected and compiled on various aspects including all major areas of citizen’s lives

10. National Sample Survey Office (NSSO):

(i) Survey Design and Research Division is responsible for technical planning of surveys, analysing and presenting survey results.

(ii) Field Operations Division is responsible for collection of primary data for the surveys undertaken by NSSO.

(iii) Data Processing Division is responsible for processing, validation and tabulation of the data collected through surveys.

(iv) Coordination and Publications Division is responsible for coordinating all the activities of different Divisions of NSSO.