MODERN CENSUS in POLAND

Janusz DygaszewiczCentral Statistical Office in PolandGroup of Experts on Population and Housing Census

Geneva, 28-30 October 2009

• New implementation – mixed model• Acquisition of statistical data on-line• Solution architecture• The use of administrative sources • Geo-coding• Conclusions

Agenda

2

Mixed Model for Population and Housing Census

Mixed model - a combination of data from administrative sources with data

acquired on-line from statistical surveys

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 (using hand-held terminals with GPS and GIS service – HTC Touch HD with GPS) – ( CAPI - Computer Assisted Personal Interview)

System Architecture – on-line channels

CAII

CATI

Map Server

CAPI

OperationalMicrodata Base

CensusCompletenessManagement

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

Supervisor

• Questionnaire completeness analysis• Enumerator monitoring

– Census Progress– Localization and trail

• Census completeness monitoring• Emergency situation management

– Providing help for enumerators

• Providing necessary information to enumerators

9

Census Completeness Monitoring

Enumerator tracking

Hand-held terminal

12

Enumerator

• Visiting all assigned holdings– Filling electronic questionnaires

• Daily synchronisation• Contact with the supervisor

in 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

CENSUSData Processing Infrastructure

Solution architecture

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CATICAII

Map Server

Register A

CAPI

MicrodataDatabase

OperationalMicrodataDatabase

Register B Input,

Estimation,Definitions,

ClassificationMETADATA

Statistical IDTable

Estimation

Public METADATA

Individual Orders

Spatial Analysis

INTERNET

Registry GestorsPublic Zone

Data Normalization

Data Integration

Data Depersonalisation

Data DisseminationPublic Zone

The Methodology of Linkage Data from Several Channels

Pop

ulat

ion

Attributes

Register data

Enumerators

Imputation& calibration

Internet, CATI

The Census Model in Poland

Att

rib

ute

s n

ot

co

vere

d -

im

pu

tati

on

Pop

ulat

ion

Attributes

Register data

Enumerators

Sm

all A

rea

Est

imat

ion

Imputation & calibration

Internet, CATI

Estimation of whole population

The Census Model in Poland

Estimation based on the sample surveys

Sample Surveys

• 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 sources in censuses

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

base administrative registers

The name of the base registerThe name of the body responsible for

administrative system

Population Identification Register System:

General Electronic System of Population Registration - PESEL,

Ministry of Interior Affairs and Administration

Registration files on the level Gminas’ offices

Gminas’ offices, e.g.Commune/Municipal offices

- Economy units and enterprises identification register called REGON

Central Statistical Office

- Territorial identification register – TERYT integrated with land and building registers

Central Statistical Office

• 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.

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.

• 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 the GRID - 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.

Identification system for address point

XXXXXX X YYYYYYY RRRRRR O UUUUUBuilding

No.Dwelling

No.

ID of administration

levels

ID of city, town,

village

ID of statistical

area

ID of street

5767

Identification system for spatial address point

XXXXXX X YYYYYYY RRRRRR O UUUUUBuilding

No.Dwelling

No.

ID of administration

levels

ID of city, town,

village

ID of statistical

area

ID of street

yx

5767

220 lat Statystyki PL

Dyrektor Projektu: J. Dygaszewicz 35220 lat Statystyki PL Dyrektor Projektu: J. Dygaszewicz 35

220 lat Statystyki PL

Dyrektor Projektu: J. Dygaszewicz 36220 lat Statystyki PL Dyrektor Projektu: J. Dygaszewicz 36

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

Good cooperation between statistical services

and register-keepers are crucial for integration of

administrative data for statistical purposes.

Instead of a conclusion

Census in 2002

• 200 thousands of census enumerators

• 150 mln of questionnaires

• 1 000 tons of papers

• At the end shredding census questionnaires

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

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Central Statistical Office - Poland

Thank you for your attention

Janusz Dygaszewicz

Central Statistical Office, PolandDirector of Central Census Bureauj.dygaszewicz@stat.gov.pl