The document summarizes Tunisia's approach to disseminating data from its 2004 General Population and Housing Census. It discusses (1) providing census results through paper publications, CD-ROMs, and a website, with data available down to the sector level; (2) establishing an Access Center to Individual Data to facilitate research access while protecting confidentiality; and (3) aiming to improve interactivity and expand the online database over time. The goal is to make census results widely available to government agencies, academics, and businesses in a variety of formats.
1. United Nations Regional Seminar on Census
Data Dissemination and Spatial Analysis
Amman - Jordan 16 – 19 May 2011
Determination of the scope and form
of census data dissemination
Presented by:
Mounir JELASSI
National Statistical Institute of Tunisia
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2. Objective
The purpose of this presentation is to expose
the Tunisian experience concerning the scope
and form of disseminating data of the General
Population and Housing Census 2004 (GPHC)
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3. Summary
1. Few words about the GPHC in Tunisia
2. The scope and form of data dissemination of the
GPHC 2004
1. Paper , CDROM
2. Website
3. Access Center to the Individual Data (ACID)
3. Conclusion
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4. Few words about the GPHC in Tunisia
• The GPHC is exhaustively and concern the
population (individual, household) and housing.
• The periodicity of the GPHC in Tunisia is ten (10)
years.
• Since the independence in 1956, Tunisia has
produced five (5) GPHC:
– The first GPHC was in 1966.
– The last GPHC is carried out in 2004.
– The next GPHC is scheduled for 2014.
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5. Few words about the GPHC in Tunisia
• Census operations took place in four phases:
– The preparatory phase
– The Pre-enumeration
– The enumeration
– The data processing and dissemination of results
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6. Few words about the GPHC in Tunisia
• The preparatory phase :
– The preparation of the cartographic documentation
– The preparation of methodology and technical documents
for pre-enumeration phase.
• The Pre-enumeration :
– Delimit of the municipalities, cities and sectors on the ground
and on maps,
– Proceed to sweep these units to make a first evaluation of the
number of local, housing and households.
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7. Few words about the GPHC in Tunisia
• The enumeration :
– Collecting detailed statistical information on housing,
households and individuals.
• The data processing and dissemination of results:
– The coding and data entry, data processing, analysis and
publication of results.
– Several publications have emerged giving details on the
characteristics of individuals, households and housing.
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8. The scope and form of data
dissemination of the GPHC 2004
• The dissemination of the census data is
diversified according to the media of
dissemination, the data presentation, the
potential users and the data level details.
• I will approach this subject basing on the
dissemination media as a beginning point to
explain the other dissemination elements.
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9. The scope and form of data dissemination of the GPHC 2004
Dissemination media
• The different dissemination media used in the
GPHC 2004 are:
• Paper , CDROM
• Website
• Service responding to specific requests
• Access Center to the Individual Data (ACID)
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10. The scope and form of data dissemination of the GPHC 2004
Dissemination media
Paper , CDROM
Data level details:
It varies from the national
level to the sector level.
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11. The scope and form of data dissemination of the GPHC 2004
Dissemination media
Paper , CDROM
Presentation :
Tabulation,
Graphics,
Cartography
literal description
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12. The scope and form of data dissemination of the GPHC 2004
Dissemination media
Paper , CDROM
• Books, CDROM
• Book1: First result
This publication is devoted to the exploitation of the
principal results at the national level and shows the
evolution of different statistical informers through a
comparison between these results and those of
preceding census of 1994.
Data level details: National level, gouvernorat
Presentation : Tabulated, Graphics, literal description
Potential user: the government.
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13. • Books, CDROM
• Book 2: Results by administrative unity
This publication presents the statistics about the
population, the households and the housing by
administrative unity.
Data level details: Gouvernorats, Delegations, Towns
and Sectors
Presentation : Tabulated, cartography, literal
description
Potential user: the government, universities,
economical enterprises. 13
The scope and form of data dissemination of the GPHC 2004
Dissemination media
Paper , CDROM
14. • Books, CDROM
• Book 3: Results by delegation
This regional publication (5 sections) contains the
principal informers concerning the characteristics of :
demography, education, mobility , internal and external
migration, economy, the population, the housing and
the life conditions of the households.
Data level details: Delegation
Presentation : Tabulated, cartography, literal
description
Potential user: the government, universities,
economical enterprises. 14
The scope and form of data dissemination of the GPHC 2004
Dissemination media
Paper , CDROM
15. • Books, CDROM
• Book 4: the migration Characteristics
This publication is devoted to the treatment of the data
on internal and international migration, and analyze the
characteristics of the migrant inter-Gouvernorats,
foreign population and Tunisian population born
abroad.
Data level details: National level, Gouvernorat
Presentation : Tabulated, literal description
Potential user: the government, universities,
economical enterprises.
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The scope and form of data dissemination of the GPHC 2004
Dissemination media
Paper , CDROM
16. • Books, CDROM
• Book 5: Demographic characteristics of the population
This publication is dedicated to:
- The population detailed structure by age and marital status,
- The data on the parity of women in general and parity of
married women, widowed and divorced and the family
nuclei,
- The demographic , educational and economic
characteristics of the population with disabilities.
Data level details: National level, Gouvernorat
Presentation : Tabulated, graphics, literal description
Potential user: the government, universities, economical
enterprises. 16
The scope and form of data dissemination of the GPHC 2004
Dissemination media
Paper , CDROM
17. • Books, CDROM
• Book 6: Characteristic of housing, household and living
conditions
This publication is devoted to housing characteristics
such as type of housing, number of rooms, floor area,
connecting the housing to the electricity, drinking water
and sanitation and housing usage. It also includes
characteristics of household appliances, leisure,
transportation and use of communication technologies.
Data level details: National level, Gouvernorat
Presentation : Tabulated, literal description
Potential user: the government, universities,
economical enterprises.
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The scope and form of data dissemination of the GPHC 2004
Dissemination media
Paper , CDROM
18. The scope and form of data dissemination of the GPHC 2004
Dissemination media
Paper , CDROM
• Notes:
Data level details: National level, Gouvernorat
Presentation : Tabulated, graphics and literal
description
Potential user: The government.
• Press communication: concerned the first results
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19. The scope and form of data dissemination of the GPHC 2004
Dissemination media
• Website
• Tabulation
• Database
• PDF
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20. The scope and form of data dissemination of the GPHC 2004
Dissemination media
Website
• Tabulation:
• Generated
by
predefined
SQL query
• Can be
exported to
Excel
format
• Can be
printed 20
21. The scope and form of data dissemination of the GPHC 2004
Dissemination media
Website
• Database:
• MySQL database
• Contains only information published in books
• We hope to expand this database to include more
detailed information that allows to have a website
more interactive.
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22. The scope and form of data dissemination of the GPHC 2004
Dissemination media
Website
• PDF:
- Free
download
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23. The scope and form of data dissemination of the GPHC 2004
Dissemination media
Service responding to specific requests
- This service is responsible for monitoring specific
requests of different users for statistical data and
especially the census data.
- These requests are received by mail, fax or letter.
- The potential users are universities and economical
enterprises, international organisations.
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24. The scope and form of data dissemination of the GPHC 2004
Dissemination media
Access Center to the Individual Data (ACID)
• The reasons for the creation of the center
• Researchers have always wanted access to individual
information.
• The researchers applications are sometimes in conflict
with the preservation of the confidentiality of the
data.
• Setting up a procedure allowing a compromise
between the users needs for individual data and the
guarantee of statistical confidentiality.
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25. The scope and form of data dissemination of the GPHC 2004
Dissemination media
Access Center to the Individual Data (ACID)
• The individual data of the center
• The center started in late 2005.
• The work started with a pilot survey: the national
survey of economic activities 2002.
• The Generalization of the work to include the
General Census of population (GPHC 2004) and other
surveys.
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26. The scope and form of data dissemination of the GPHC 2004
Dissemination media
Access Center to the Individual Data (ACID)
• Technical structure of the center
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The center
access server
Metadata access
Online
analysis
Data processing
software
The centre
head
User query
27. The scope and form of data dissemination of the GPHC 2004
Dissemination media
Access Center to the Individual Data (ACID)
• Technical structure of the center
• Data processing software:
– SAS,
– SPSS,
– Stata
– …
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28. The scope and form of data dissemination of the GPHC 2004
Dissemination media
Access Center to the Individual Data (ACID)
• Technical structure of the center
• The online analysis:
– Allows to make an analysis of anonymous micro-data
through the WEB and without having the possibility to
download these micro-data.
– It provides only tabulation and simple analysis
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29. The scope and form of data dissemination of the GPHC 2004
Dissemination media
Access Center to the Individual Data (ACID)
• Technical structure of the center
• Metadata access:
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30. The scope and form of data dissemination of the GPHC 2004
Dissemination media
Access Center to the Individual Data (ACID)
• Technical structure of the center
• Metadata access:
– Description of the file contents (calculation methods)
– Number of recorders of the file
– Number of variables of the file
– The type of file structure (relational)
– List of Key words
– List and description of variables
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31. The scope and form of data dissemination of the GPHC 2004
Conclusion
Compared to previous censuses, the
dissemination of Census 2004 is characterized by:
- The detailed level of information on finer
geographical units and the individual data.
- The cartographic dissemination of certain socio-
economic indicators.
- The dissemination on the Website.
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