How does TI assess a Country's Performance & with the Data gathered, create the yearly  scoring or CPI? 

Survey sources for the CPI 2005

Explanatory notes:

* CPI Score relates to perceptions of the degree of corruption as seen by business people and country analysts and ranges between 10 (highly clean) and 0 (highly corrupt).

** Confidence range provides a range of possible values of the CPI score. This reflects how a country's score may vary, depending on measurement precision. Nominally, with 5 percent probability the score is above this range and with another 5 percent it is below. However, particularly when only few sources (n) are available an unbiased estimate of the mean coverage probability is lower than the nominal value of 90%.

*** Surveys used refers to the number of surveys that assessed a country's performance. 16 surveys and expert assessments were used and at least 3 were required for a country to be included in the CPI.

A "#" is given if the source mentioned in the column contributed to the assessment of a country.

**** Abbreviations are:

  • CU: Columbia University

  • EIU: Economist Intelligence Unit

  • FH: Freedom House, Nations in Transit

  • II: Information International

  • IMD: World Competitiveness Report of the Institute for Management Development

  • MIG: Merchant International Group

  • PERC: Political and Economic Risk Consultancy, Hong Kong

  • UNECA: United Nations Economic Commission for Africa, African Governance Report

  • WEF: Global Competitiveness Report of the World Economic Forum

  • WMRC: World Markets Research Centre


Transparency International - Philippines