DEMOGRAHPIC DATAPopulation Census

BYDR: NAJEEB MEMON

ASSIST: PROF:

SOURCES OF DEMOGRAPHIC DATA

• In developing countries ( Pakistan) registration of births & deaths is grossly

• :. Demographic sample surveys are conducted yearly to estimate the births & deaths.

Incomplete Unreliable

CensusSurveys

Registration of births and deaths

Census Survey

Survey: is actually a technique that takes out a sample from a population scientifically to arrive at a decision for the entire population

Census: Enumeration of entire population & often the compilation of other

demographic, social & economic information

pertaining to that particular population at a

specific time.

Internal ObstaclesLack of trained staff

Poor transportation & cultural barriers

CENSUSIntroduction & History

=

• The number of persons in any community can be determined by Counting .

Census is a Characteristic of population

CENSUS COUNTING

Socio-economic

Demographic

• First complete census in SWEDEN (in 1749 A.D.)

• Other countries followed it

• In Indo-Pak the 1st 1867-1872, • & repeated in 1881. • Therefore , it has been carried out every 10th year.

Pakistan’s 1st in 1951,

2nd 1961

3rd 1972

4th 1981

5th in 1998 & 6th 2008

Methods of Census

• Census are taken by :

• 1) Enumeration• 2) Questionnaire • 3) Combined of both methods

• First method is used in Pakistan and USA, while the Questionnaire method in England

Planning & Preparation

TYPES OF CENSUS

• Census may either be “de facto” or “de jure”

a person is counted at the place he or she is found at the time of counting.

A person is counted at the place of its normal residence.

“de facto”

“de jure”

Registration of Vital Events(V.E)

• Whereas “Census” is an intermittent counting of Population,

• registration of births & deaths (V.E) keeps a continuous check on demographic

changes.

If it is complete and accurate, it can serve as

reliable source of health information.

System of Collection and Registration of Vital Events in

Pakistan

• Registration of Births & Deaths

The Registration of births and deaths is carried out throughout

Pakistan

excepting the Agencies and Tribal areas of N.W.F.P., Baluchistan

Continue..• The area of Sindh Province has however a different type

of system for registering these event.

From Medical Institutions

In the Urban areas :

In rural areas:

The hospitals & dispensaries to the local health authorities

Births and deaths registration is done by local

bodies.

it is done by the village Headman or

Union Council.

Other sources of Demographic Data

• Notification of Diseases• Hospital Records• Disease Registries• Other Health Services Record• Record Linkage• Health Manpower Statistics• Environmental Health Statistics• Population based Epidemiological studies

• Urbanization: Mass movement of rural population to urbanresulting in increasing of urban pop & growth of cities.

Some countries define:25000 or more Other countries:Minimum of 20 000

Metropolitan Area: 100000 or more people(important city at its core plus suburban & exurban areas that

surround the city)

Urban Agglomeration: 1 million population or more

Mega city: 10 million population or more

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