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Statistics PortugalDepartment of Methodology and System InformationInformation Infrastructure Unit

Isabel Farinha and Jorge Magalhães

«21th Meeting of the Wiesbaden Group on Business Registers International Roundtable on Business Survey Frames

24-27 November 2008 OECD, Paris France

SIGUA-BRSystem for co-ordination of frame populations and samples from the Business Register

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» Implementing the management system of frame population and samples (SIGUA)

» Introduce new methods of sampling and statistical inference

Objectives

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»The System (SIGUA) for co-ordination of frame populations and samples from the

Business Register (BR)

» Management focused on Sample

» Statistics survey (OES) recorded in the system metadata (SMI) of INE

Introduction

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BR

Local UnitsLocal Units

Short-termsShort-terms

StructuralStructural

EnterprisesEnterprises

Short-termsShort-terms

StructuralStructural

Year_N December

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StructuralStructural

Short-termShort-term

Sample 1Sample 1

Sample 1Sample 1

Sample nSample n

Sample nSample n

Sampling

frame

Sampling

frame

Sample 1Sample 1

Sample nSample n

Sample nSample n

Sample 1Sample 1

Sampling

frame

Sampling

frame

Sampling

frame

Sampling

frame

Sampling

frame

Sampling

frame

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Functionalities

Import Population

frame

Import Sampling

frame

Communicate with

Collecting data

Import Samples

Communicate in

launching an survey

Communicate with the BR

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• Unique enterprise

• Unique sample surveyProposals

Analyse BR

SIGUA

Analyse Sample

Proposal rejected

Proposal accepted

SIG

UA

Data

C

ollecti

on

S

yste

m

Proposal rejected

Proposal accepted

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«Advantages

» To have centralized management of all updates

already made in the different samples and BR

» To have a common frame population to all the structural surveys and another one to all the

short-term surveys

» To allow the implementation of a system to “coordinate drawing of samples”

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» All the users through a called window “Window

Sample” » the users will be able to consider shares of update to the sample

»To allow that all the surveys where the enterprise is integrant part, are informed of the updates that occurs, as a result of a proposal

» To allow the reduction of the burden statistics

«Advantages

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SCI in Global System of Surveys

SCISCI

SSMIMI

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Thank you for your attention