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MODERN CENSUS in POLAND

This paper discusses the modern census implementation in Poland, focusing on the mixed model combining administrative sources and online data collection channels. It explores the solution architecture, geo-coding, and the use of technology for data acquisition.

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MODERN CENSUS in POLAND

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  1. MODERN CENSUS in POLAND Janusz Dygaszewicz Central Statistical Office in Poland Group of Experts on Population and Housing Census Geneva, 28-30 October 2009

  2. Agenda • New implementation – mixedmodel • Acquisitionofstatistical data on-line • Solution architecture • The use of administrative sources • Geo-coding • Conclusions

  3. Mixed Model for Population and Housing Census Mixed model - a combination of data from administrative sources with dataacquired on-line from statistical surveys

  4. Data collection channels • Administrative sources – including spatial data reference registers ON_LINE: • Self-enumeration by Internet • ( CAII – Computer Assisted Internet Interview) • Telephone Interview • ( CATI - Computer Assisted Telephone Interview) • Sample surveys(usinghand-held terminals with GPS and GIS service – HTC Touch HD with GPS) • ( CAPI - Computer Assisted Personal Interview)

  5. System Architecture – on-line channels Census Completeness Management Operational MicrodataBase Map Server CAII CAPI CATI

  6. Supervisor – main actor • Address Point and Census Area management • Data acquisition method choice (channels) • CATI • CAPI • Enumerator management • Census Area assignment • Address point assignment • Workday planning

  7. Address point assignment

  8. Supervisor • Questionnaire completeness analysis • Enumerator monitoring • Census Progress • Localization and trail • Census completeness monitoring • Emergency situation management • Providing help for enumerators • Providing necessaryinformation to enumerators

  9. Census Completeness Monitoring

  10. Enumerator tracking

  11. Hand-held terminal 12

  12. Enumerator • Visiting all assigned holdings • Filling electronic questionnaires • Daily synchronisation • Contact with the supervisorin terms of task scheduling • Adding newly identified holdings

  13. Enumerator

  14. Enumerator • Map module - GIS • Ortophotomap • Cadastral Data • Assigned Tasks • Started Tasks • Completed Tasks

  15. Enumerator • Alarm procedure • In emergency situations, enumerators have a possibilityof sending an alarm signal to their supervisors • Alarm notice is sentto the supervisor applicationand via SMS to the supervisor 16

  16. CENSUS Data ProcessingInfrastructure

  17. Solution architecture Map Server Data Integration Data Depersonalisation Registry GestorsPublic Zone Data Normalization Data Dissemination Public Zone Estimation Statistical ID Table Register A Individual Orders Microdata Database Operational Microdata Database Spatial Analysis Register B Input, Estimation, Definitions, Classification METADATA INTERNET CAPI CAII Public METADATA CATI 18

  18. The Methodology of Linkage Data from Several Channels

  19. TheCensus Model in Poland Attributes Register data Attributes not covered - imputation Internet, CATI Imputation & calibration Enumerators Population

  20. TheCensus Model in Poland Attributes Register data Sample Surveys Estimation based on the sample surveys Small Area Estimation Internet, CATI Imputation & calibration Enumerators Estimation of whole population Population

  21. The following usage of administrative sources is being planned during the census: direct source of research data, source of information to create a list of entities covered by the census (address-housing survey) , in addition, a source of information for: imputation, data estimation, comparison and determining the quality of the data. The use of administrative sourcesincensuses 27

  22. In Poland exist several hundred registers, but 3 of them could be pointed as the base administrative registers

  23. This 3 base registers deliver unified identification system across other different registers and make it possible to integrate almost all administrative sources. Now, about 28 public registers were selected as administrative sources for census. Territorial Identification Register - TERYT is the most crucial for public statistics.

  24. x,y GEOCODING • Territorial identification registry (System TERYT) provides location data of all statistical units as the address-point of a related building • Location of buildings is specified using geographical x,y coordinates, giving the exact location of each building and make possibility to linking microdata from several registers.

  25. This will eliminate the necessity to recalculate data when administrative borders are changing. Furthermore, the point assignment will allow easy processing of statistical data in any chosen area -even for theGRID - GEOSTAT • x,y geocoding is crucial in all three stages of the census: • the preparatory works, • management of enumerators • and after the census for multidimensional spatial analysis.

  26. Identification system for address point XXXXXX X 7 6 7 5 Building No. Dwelling No. YYYYYYY RRRRRR O UUUUU ID of administration levels ID of city, town, village ID of statistical area ID of street

  27. Identification system for spatial address point XXXXXX X 7 6 7 5 Building No. Dwelling No. x y YYYYYYY RRRRRR O UUUUU ID of administration levels ID of city, town, village ID of statistical area ID of street

  28. 220 lat Statystyki PL Dyrektor Projektu: J. Dygaszewicz 35 Dyrektor Projektu: J. Dygaszewicz

  29. 220 lat Statystyki PL Dyrektor Projektu: J. Dygaszewicz 36 Dyrektor Projektu: J. Dygaszewicz

  30. We expect that after the population census in 2011 spatial analysis, based on address point assignment, enable us to disseminate geostatistics data for more than 40 000 settlements in Poland

  31. Good cooperation between statistical services and register-keepers are crucial for integration of administrative data for statistical purposes.

  32. Instead of a conclusion Census in 2002 Census 2011 20 thousands of census enumerators 0 questionnaires 0 tons of papers ca. 40 mln € less better data the more reliable results statistical surveys in the future • 200 thousands of census enumerators • 150 mln of questionnaires • 1 000 tons of papers • At the end shredding census questionnaires

  33. Central Statistical Office - Poland Thank you for your attention Janusz Dygaszewicz Central Statistical Office, Poland Director of Central Census Bureau j.dygaszewicz@stat.gov.pl

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