Session 3 The population registers in Germany the

Session 3 The population registers in Germany – the main data source in the 2011 Census UNECE-Eurostat Expert Group Meeting on Censuses Using Registers Stephanie Hirner, Census Division Federal Statistical Office of Germany

Census model in Germany Steering file – Register of addresses and buildings Employment registers Population registers 35 million data records 88 million data records Linking and checks for multiple registration Clarification of implausible cases n Household generating procedure 38. 5 million households n Correction of register errors Census of buildings and housing 17. 5 million owners of buildings/dwellings Data collection for special facilities 2 million persons Supplementary sample survey max. 10% of the population n n Overcoverage/ undercoverage Variable integration Result: data records typical of the census Federal Statistical Office, Germany May 12 2

Population registers in the 2011 Census Function n One of the data sources for the build-up of the register of addresses and buildings n Supporting of primary data surveys n Main data source to cover the demographic and geographical census variables Federal Statistical Office, Germany May 12 3

Population registers in the 2011 Census Data acquisition and integration n Data acquisition § Decentralised via the statistical offices of the Länder § Two supplies around the census reference date n Integration § Linking of the information on addresses § Adding personal data records via the address-ID n Build-up of a temporary centralised population register for Germany Federal Statistical Office, Germany May 12 4

Population registers in the 2011 Census Quality assurance n Correction of the data stock § Check for incorrect registration § Correction via questionnaire and an automatic process n Correction via the sample survey § Identification of overcoverage and undercoverage § Extrapolation of the results and statistical correction n Correction only for statistical purposes Federal Statistical Office, Germany May 12 5

Reference data stock n Combination of data sets on addresses and on population n Steering function in the 2011 Census § § Completion of variables Correction of data sets Consolidation of the different data sources Coordination of information Federal Statistical Office, Germany May 12 6

Conclusion n Benefits of using registers § Area-wide information § Access and availability n Challenges of using registers § Decentralised keeping of data § Differences in data quality between registers § No uniform identifier for persons or dwellings Federal data stock for coordination and consolidation is necessary! Federal Statistical Office, Germany May 12 7

Federal Statistical Office, Germany May 12 8