Index of Services methodology
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Introduction
The monthly Index of Services (IoS) has been developed to provide a timely indicator of growth in the output of service industries
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Conceptual basis
The IoS is designed to be a short-term measure of Gross Value Added (GVA)
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Index construction
This section describes the processes that occur at each stage of the construction of the IoS
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Source data
This section covers the the Index of Services and the wide variety of different data is uses from many sources
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Time series methods
The IoS is constructed within a computerised system known as the Central Shared Database (CSDB)
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Quality assurance
Information on the quality assurance process
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National accounts
A monthly indicator of the change in GVA of the service industries
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Future improvements
To improve both the range and quality of the indicators used to measure the IoS
