ICT Development Index (IDI)

Index: ICT Development Index (IDI)
Report: Measuring the Information Society 2017
Responsible Entity: International Telecommunication Union (ITU)
Last edition publication date: november 2017
URL: https://www.itu.int/en/ITU-D/Statistics/Pages/publications/mis2017.aspx

Description: IDI is a composite Index comprising eleven indicators, covering not only the access (ICT infrastructure), but also the use (intensity) and the skills (for the use of ICT). It results from the weighting of three sub-indexes (Access, Use and Skills), whose weights of the first two (40%) are superior than the third (20%). Each indicator has the same weight within the same sub-index. The IDI resulted from the merging of two previous indexes: The Digital Opportunity Index and the ICT Opportunity Index.

The three sub-indexes and their composition are the following:

ICT Readiness

Fixed-telephone subscriptions per 100 inhabitants

Mobile-cellular telephone subscriptions per 100 inhabitants

International Internet bandwidth per Internet user,

Percentage of households with a computer

Percentage of households with Internet access

ICT Use

Percentage of individuals using the Internet

Fixed broadband subscriptions per 100 inhabitants

Active mobile-broadband subscriptions per 100 inhabitants.

ICT Capability      

Mean years of schooling

Gross secondary enrolment

Gross tertiary enrolment

It intends to monitoring, through the time, the development process of ICT and a country’s integration in the information Society.

Figure 1. Three stages in the evolution towards an Information Society. Source: Measuring the Information Society, ITU