Eurostat

09. Statistical registers and frames

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Presented by

• Ágnes Andics, Ildikó Györki• HCSO Hungarian Central Statistical Office

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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

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Its place in the processing flow

RegisterSurvey frame

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01. Main theme module

02. Populations,

frames, and units

03. Building and

maintaining statistical

registers

Readiness: V2.0

reviewed by GR,NO

05. Design of

statistical register and

survey frame

04. Survey frames 07. The quality of the

registers and frames

06. The statistical units

and the business

register

The topic

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The populations, frames and units of business surveys

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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?

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The population (cont.)• Differencies between:

• Population of interest• Target population • Frame population• Survey population

Under coverage

Over coverage

Target population

Survey population

Frame population

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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

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The statistical unit (cont.)

(Source: Statistical units, UN[2007])

Source: Statistical units, UN[2007])

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The unit types

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• Observation unit – about what

• Reporting unit – to what

• Collection unit – from what

Data supplier - legal

Data provider – practical

Building and maintaining statistical registers to support business surveys

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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)• tools for the coordination between statistical and

administrative sources

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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

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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

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Business register

• Business Register Regulation (EC) No 177/2008 of the European Parliament and of the Council• Mandatory statistical unit types:

enterprise group, enterprise, local unit.

• Connection with the legal units• Optional statistical unit types:

kind of activity unit (KAU),local kind of activity unit (LKAU)

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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

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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)• tools for the coordination between statistical and

administrative sources

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The design of statistical registers

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YES

NO

Start of the register design to

the target population

Compare the target population of the survey

with the available registers

Does the register unit match the target population

unit?

Does the register cover the scope of target

population?

YES

Does the register maintenance suit to the periodicity, ref. period

of the survey?

YES

Does the register contain suitable

attributes to define the target population?

NO

NO

YES NO

Examine the possibility and sources to modify the register content and

maintenance

Can the existing register be modified to meet the demand of the

target population?

NO

YES Can a new register

(satellite reg) be created to meet the demand of the target population?

NO

Find a new unit type in the business register to report about the originally

planned unit

YES

End of the register design to

the target population

Survey frames for business surveys

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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

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.

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The frames for sampling• Survey frame sampling frame

• Subpopulations

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„A” take all

„C”take no

„B” take some

Sample

Frame population

Sample

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

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The role of master frame

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Survey frames

Survey frame C:

(1, 2, 3, 4, 5, 6)

Metadata description of the surveys A B D C

Statistical units of the master frame

1 2 3 4 5 6 7 8

Survey frame A:

(1, 2, 3)

Survey frame B:

(1, 5, 6)

Survey frame D:

(7, 8)

Sample: (1, 3, 5)

How to coordinate the surveys?

• Horizontal integration• Vertical integration• Let’s create subpopulations

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Features of data integration

Possibilities of data integration Topics to be integrated horizontally

Topic 1 Topic 2 Topic 3 Topic 4 Topic 5

Subpopulations to be integrated vertically

Subpopulation 1 X X X

Subpopulation 2 X X X

Subpopulation 3 X X X

Subpopulation 4 X X

Subpopulation 5 X

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

institutionsSBS, labour cost survey

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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

YESDo the different surveys have common

population/subpopulation?

NO

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