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Index of Services construction

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This page is currently under review as part of the GDP Output Improvement Programme (226.7 Kb Pdf) .

The Index of Services is constructed within the Office for National Statistics' (ONS) Central Shared Database (CSDB), a computer system that is widely used in compiling the UK National Accounts, in what is essentially a monthly version of the system used to produce the quarterly estimates for the service sector of GDP(O).

This section describes the processes that occur at each stage of the construction of the IoS. A mathematical formulation of the index is provided in Annex A.

The IoS computer system can be represented by a simple pyramid, as shown in the IoS Pyramid of processing, available from the Downloads section.

The tasks that are performed at each stage of the process are described in detail in Stages of processing.

Please contact us at:

ios.enquiries@ons.gsi.gov.uk

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