1. Eurostat 09. Statistical registers and frames 1

2. Presented by Ágnes Andics, Ildikó Györki HCSO Hungarian Central Statistical Office 2

3. The aim of the topic To describe how we can derive, create and manage a survey population To describe how we can support and evaluate the data collection by the help of the survey frame 3

4. Its place in the processing flow Register Survey frame 4

5. The topic 5

6. The populations, frames and units of business surveys 6

7. The population Example: A survey wants to observe the enterprises undertaking building construction activities in 2011. What is the unit of the population? What is the scope of the population What is the reference time of the population? 7

8. The population (cont.) Differencies between: Population of interest Target population Frame population Survey population Under coverage Over coverage Target population Survey population Frame population 8

9. The statistical unit Definition: is an entity about which information is sought and for which statistics are ultimately compiled Types created by the legal, accounting or organizational criteria the geographical criteria and the production criteria 9

10. The statistical unit (cont.) (Source: Statistical units, UN[2007]) Source: Statistical units, UN[2007]) 10

11. The unit types 11 Observation unit – about what Reporting unit – to what Collection unit – from what  Data supplier - legal  Data provider – practical

12. Building and maintaining statistical registers to support business surveys 12

13. The statistical registers The aim: to record and maintain units for survey populations to be a base for the analysis of the register population (register units)register units tools for the coordination between statistical and administrative sources 13

14. The attribute of the statistical registers Actual information Identification characteristics Contact characteristics Demographic characteristics Economic/stratification characteristics Link characteristics Control- and ownership characteristics Maintenance information (source, date, etc.) Historical information 14

15. The source and maintenance of statistical registers Sources: Administrative registers (VAT reg., social security administration and chambers of commerce, etc.) Register survey Transfer of statistical data (number of employees, turnover, etc.) Feedbacks from the statistical surveys (living or not living) other sources Frequency of maintenance Coordinated maintenance with the connecting registers 15

16. Business register Business Register Regulation (EC) No 177/2008 of the European Parliament and of the Council Business Register(EC) No 177/2008 Mandatory statistical unit types:statistical unit enterprise group,enterprise group enterprise,enterprise local unitlocal unit. Connection with the legal units Optional statistical unit types:statistical unit kind of activity unit (KAU),kind of activity unit local kind of activity unitlocal kind of activity unit (LKAU) 16

17. Other statistical registers Satellite registers not an integral part of the statistical business register more limited in scope (e.g. in terms of NACE) than the statistical business register contain other attributes used for stratification purposes EGR - EuroGroups Register focused on multinational enterprises 17

18. The statistical registers The aim: to record and maintain units for survey populations to be a base for the analysis of the register population (register units)register units tools for the coordination between statistical and administrative sources 18

19. The design of statistical registers 19

20. Survey frames for business surveys 20

21. Survey frame and its connection with the register The aim is to describe population units and their attributes the coverage of the population (duplications, omissions in units) The units are suited to the reference time of the survey Connection with the register Register is changing Frame should be stable and repeatable Survey frame instances register snapshots 21

22. The units, attributes and paradata The snapshot date Type, identifier and name of the statistical unit Identifier and name of the data supplier Contact attributes Attributes of the stratification, analyses (NACE, NUTS, LAU, legal form, category of size, activity state of the unit, etc.) Other topic-specific attributes Belonging to the sample Response and non-response, cause of non-response Type of contact, etc. 22

23. The frames for sampling Survey frame sampling frame Subpopulations 23 „ A” take all „C” take no „B” take some Sample Frame population Sample

24. The frames The role List of population in a given reference period Attributes for accessing the unit Attributes for grouping the units for sampling and processing Attributes (paradata) about the data collection … The source One or more registers 24

25. The role of master frame 25

26. How to coordinate the surveys? Horizontal integration Vertical integration Let’s create subpopulations 26

27. Example Big enterprises of industry Small enterprises of industry Big enterprises of construction Small enterprises of construction Enterprises in financial sector Government, social security and non-profit institutions SBS, labour cost survey 27

28. 28 NO YES Start of the survey frame design Is master frame built on the register of the target populations (unit, reference time, scope)? Consider the possibility to build a master frame on the register of the target populations Compare the target population of the different surveys (unit, scope, reference time) in order to harmonize them YES Do the different surveys have common population/subpopulation? NO Do the different surveys have common variables for creating the union of the populations? Define the subpopulations of the surveys to the horizontal integration Define the disjoint populations of the surveys to the vertical integration Design the assignment of the survey frames based on the master frame. Use the predefined subpopulations if it is necessary. Define the master frame from the register snapshot to the demanded units, scope and reference time to support the harmonisation Design the building of the survey frames based on the register snapshot. End of the survey frame design The design of statistical frames