1 / 22

Objectives

Country Practices on Census Data Archiving and Use of Census Micro-data: Results of Pre-seminar Questionnaire Session 2. Objectives. To better understand national practices on census data archiving To examine the regional practices on census data archiving and identify the challenges.

kathyndavis
Download Presentation

Objectives

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Country Practices on Census Data Archiving and Use of Census Micro-data:Results of Pre-seminar QuestionnaireSession 2

  2. Objectives • To better understand national practices on census data archiving • To examine the regional practices on census data archiving and identify the challenges Responses by 21 countries Algeria, Botswana, Burkina Faso, Burundi, Cape Verde, Chad, Egypt, Ethiopia, Gambia, Ghana, Kenya, Liberia, Malawi, Mali, Morocco, Rwanda, Senegal, Seychelles, Togo, Uganda, Zambia

  3. Content of the Questionnaire • 17 questions covering A. Archiving paper census questionnaire B. Digital Archiving of Census Micro-data • Archiving strategy and management • Technological tools for archiving and system security • Documentation • Confidentiality and anonymization • Dissemination of census micro-data • Challenges

  4. Findings

  5. Archiving paper census questionnaire • 14 countries have a law/regulation for storing paper census questionnaire Algeria, Cape Verde, Egypt, Ethiopia, Gambia, Ghana, Kenya, Liberia, Mali, Morocco, Senegal, Rwanda, Uganda, Zambia • Paper census questionnaires are stored up to; • 5+ years (Uganda) • 10 years (Gambia, Kenya, Rwanda, Zambia) • 20 years (Ghana) • Until the next census (Ethiopia)

  6. Digital Archiving of Census Micro-data

  7. Archiving Strategy – Management • 7 Countries have a law/regulation for archiving of census micro-data • The Law …. • Mandates to document and archive data and other documents at all levels with a view of making statistical information (Ghana) • Instructs to send the clean data with a complete documentation to the Information Systems Technology for archiving (Ethiopia) • Mandates to document all censuses (Liberia)

  8. System for archiving • 16 countries have developed a system for archiving • 3 countries have not developed a system but have a plan for archiving • 16 countries have a unit responsible for archiving in the NSO

  9. System for archiving • Many countries developed the system for archiving fairly recently • The system was established; • Before 2000: Gambia • 2000: Burundi • 2005: Ethiopia • 2007: Mali,Senegal,Uganda • 2008: Ghana • 2009: Burkina Faso, Malawi, Morocco, Zambia • 2010: Cape Verde, Liberia, Rwanda

  10. Technological tools for archiving and system security • Tools used or plans to use for archiving • International Household Survey Network Toolkit (IHSN) (17 countries) • Redatam-based IMIS (10 countries) • CSPro (9 countries) • A system developed in house (3 countries)

  11. Technological tools for archiving and system security • Procedures to ensure long term usability of census micro-data • Back up data regularly and store data in different location (18 countries) • Migrate data periodically (8 countries) • Refresh media periodically (7 countries) • Develop a disaster recovery plan • Three databases are stored in different location, one in different organization (Kenya) • Inviolable DataCenter (Cape Verde) • Keeping backup in different place (Ethiopia)

  12. Technological tools for archiving and system security • Security measures to ensure protection of archived data • Servers set aside for storage of census micro-data only and are kept in secure rooms (Kenya) • Few authorized persons have rights of access to servers where the archived data (Egypt,Ethiopia, Gambia, Kenya, Malawi, Senegal, Seychelles, Zambia)

  13. Documentation • All countries which have a system of archiving use a standard tool for documentation, except Algeria. • Tools being used: IHSN metadata toolkit, Data Documentation Initiative (DDI) IMIS and Toolkit

  14. Documentation • Information documented in archives • Variables/definitions (18 countries) • Census methodology (16 countries) • Data processing procedures (14 countries) • Structure and formatting of the dataset (13 countries) • Coding instructions and classifications (13 countries) • Sampling methodology and weighting (13 countries) • Confidentiality and anonymization procedures (11 countries) • Evaluation of data quality (9 countries)

  15. Confidentiality and Anonymization • 16 countries have the statistical law which includes clause(s) to ensure confidentiality of census micro-data • Procedures to anonymize census micro-data • Names and address of persons are not entered during data capture (Gambia, Rwanda, Togo) • Removal of identifiers, aggregation of categories, hiding extreme values (Kenya) • Removing the unique identifiers (household number, village/place) (Egypt, Malawi, Senegal, Seychelles, Uganda) • No storage of names in files, reorganize and recode variables to make broader groups (BurkinaFaso)

  16. Dissemination of census micro-data • History of census data archiving

  17. Dissemination of census micro-data • Most countries provide access to the archived census micro-data, except Algeria and Uganda • Procedures to access micro-data • Intranet authorized access (Burundi) • Access is allowed locally through the Lab (Cape Verde) • A signed agreement with users, to permit trusted users to access semi-anonymised data files (Gambia) • A signed agreement with users (Ghana) • Written request to the LISGIS (Liberia) • Formal request of data (Malawi, Mali, Seychelles, Togo) • Accessing micro-data through the National Data Archive (Senegal, Zambia)

  18. Dissemination of census micro-data • 9 countries disseminate samples of census micro-data • Burkina Faso (10%) • Ethiopia (1%) • Gambia • Ghana (1%) • Liberia • Malawi (10%) • Senegal (10%) • Uganda (10%) • Zambia

  19. Challenges

  20. Challenges in Census Data Archiving • Lack of specific laws/regulations/policies for archiving • Determining anonymisation and dissemination procedures • Absence of disaster recovery plan • Sustainability of archiving process • No general guidelines for choosing a suitable platform to archive census data • Lack of adequate and skilled manpower • Limited funds

  21. Challenges in Census Data Archiving • Absence of a secure and permanent storage facility • Unavailability of census documents (questionnaire, manuals, codebooks) • Lost of data in original census databases • Lack of consistent or harmonized definitions, categories, classifications of variables among different censuses • Lack of mechanism to cross check the quality of micro-data

  22. Thank you !

More Related