Understanding Changes in Methodology between the 2005 and 2011 International Comparison Programs
This paper provides an overview of the technical decisions that underlie the results of the 2011 international comparison program (ICP) and concludes that there are no further steps or computations that will have any substantive impact on the final...
| Main Authors: | , |
|---|---|
| Language: | English |
| Published: |
World Bank, Washington, DC
2014
|
| Subjects: | |
| Online Access: | http://documents.worldbank.org/curated/en/2014/01/20220598/understanding-changes-methodology-between-2005-2011-international-comparison-programs-tenth-executive-board-meeting http://hdl.handle.net/10986/20416 |
| Summary: | This paper provides an overview of
the technical decisions that underlie the results of the
2011 international comparison program (ICP) and concludes
that there are no further steps or computations that will
have any substantive impact on the final results. It also
provides a review of methodological changes that can affect
the comparison of the 2011 results with the 2005 results.
The 2005 ICP produced estimates of purchasing power parities
(PPPs), real expenditures, and price level indexes for 146
countries around the world, making it the largest
statistical exercise undertaken on a global basis. A number
of new techniques were introduced in the 2005 ICP, and the
detailed data available from that round enabled an in-depth
analysis to be undertaken of not only the results but also
the impact of various methods that were employed,
particularly those used to link the PPPs for the six regions
to provide consistent estimates for all 146 countries. This
report details the choices made for ICP 2011 and how they
affect comparability with ICP 2005. |
|---|