The Setup of the Register of Addresses and Buildings of the German 2011 Census Data quality issues and solutions

2 Census 2011: Overview AGR Register of addresses Administrative register Census data set Complete enumerations Sample survey

3 The setup of the register of addresses and buildings (AGR) GABMR BA AGR Communities Regional authorities Federal statistical office … … …

4 Problems  No identification characteristic  Address characteristics as ID  Local Register Data  Low standardisation of register entries  Low harmonisation between registers  Redundant/ false/ obsolete data entries  Complex data processing

5 Using address characteristics for definite identification Municipal Code ZIPStreetNumberSupplementDistrict Oakstreet10b-

6 Using address characteristics for definite identification Municipal Code ZIPStreetNumberSupplementDistrict Oakstreet10b- Municipal Code ZIPStreetNumberSupplementDistrict OAKSTR.10B-

7 Preparation and integration of register data GAB MR BA Integration AGR Correction (regional authorities) Pass on non- matching data Computer assisted processing Matching data Return corrected data

8 Two-stage correction model Street A No. 1No. 2 Street B I. II. Street-Level Address-Level Existence, Correctness Existence, Correctness, housing space Check criterion Street renamed No. 1No. 2

9 Results

10 Database

11 3. Evidenthaltung AGR GWZ/SAR Updates

12 Andrea Maldonado Daniel Scheuregger Katja Ziprik