Data Revisions and the Expenditure Components of GDP.

The constant price components of the expenditure estimate of GDP for the United Kingdom undergo an extensive process of revision as new information comes to light. This study is concerned with three central themes: the authors assess whether the preliminary vintages efficiently incorporate information available at the time of their compilation; whether there is any evidence for the nonstationarity of data revisions; and how to construct constant price time series when there are several changes of base. Copyright 1991 by Royal Economic Society.