PROCEDURES FOR UPDATING THE RESULTS OF INTERNATIONAL COMPARISONS

György Szilágyi

Review of Income and Wealth, 1984, vol. 30, issue 2, 153-165

Abstract: This article reviews the problems involved in updating the results of international comparisons, in terms of an analytic framework focusing upon the sources of differences between various forms of extrapolation and direct comparisons. The factors identified as important are conservation of prices of the base period and weight inconsistency. The reliability of updating is undoubtedly affected by the length of the period over which the data are extrapolated. A program of regular benchmark comparisons at approximately five‐year intervals with updating for the intervening years is attractive, since it permits checking by forward and backward interpolation. Where there are large deviations, however, averaging is not an acceptable solution.

Date: 1984
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