Chain linking

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For other uses, see Chainlink (disambiguation).

Chain linking is a statistical method, defined by the Organisation for Economic Co-operation and Development as:

Joining together two indices that overlap in one period by rescaling one of them to make its value equal to that of the other in the same period, thus combining them into single time series. More complex methods may be used to link together indices that overlap by more than period.

— Glossary of Statistical Terms, OECD

Chain linking is popularly used with GDP/GNP data, to measure changes over time, giving a chained volume series.[1]


  1. ^ United States, Bureau of Economic Analysis, Concepts and methods of the United States National Income and Production Accounts, July 2008. Chapter 4, pages 11 - 23 contains much information on the chain linking method, including mathematical principles.