Parity indices (female/male, rural/urban, bottom/top wealth quintile and others such as disability status, indigenous peoples and conflict-affected, as data become available) for all education indicators on this list that can be disaggregated
Rationale
To measure the general level of disparity between two sub-populations of interest with regard to a given indicator. The further from 1 the parity index lies, the greater the disparity between the two groups of interest.
Concepts
See metadata for relevant underlying indicator.
Limitations
The indicator is not symmetrical about 1 but a simple transformation can make it so (by inverting ratios that exceed 1 and subtracting them from 2). This will make interpretation easier.
Computation Method
The indicator value of the likely more disadvantaged group is divided by the indicator value of the other sub-population of interest.
DPI = [Indi]d [Indi]a
where:
DPI = the Dimension (Gender, Wealth, Location, etc.) Parity Index
Indi = the Education 2030 Indicator i for which an equity measure is needed. d = the likely disadvantaged group (e.g. female, poorest, etc.)
a = the likely advantaged group (e.g. male, richest, etc.)
Disaggregation
None because the parity indices directly compare two sub-populations of interest.
Missing Values Country
The same as the underlying indicator.
Missing Values Global
The same as the underlying indicator.
Regional aggregates
The same as the underlying indicator.
Sources of discrepancies
The same as the underlying indicator.
Data Availability Description
Depends on underlying indicator
Data Sources Description
The sources are the same as for the underlying indicators for this goal.
Data Sources - Collection Process
The same as the underlying indicator.
Calendar – Data Description
Depends on underlying indicator.
Calendar – Data Release
Depends on underlying indicator.
Data Providers – Description
The same as the underlying indicator.
References
http://www.uis.unesco.org/Pages/default.aspx
Summary (i.e. rewritten rationale)
Parity indices measure relative disparity between two subpopulations of interest regarding a given indicator. They present the ratio of the indicator value for one group divided by that of the other. Typically, the group expected to be more disadvantaged is likely placed in the numerator. A value of exactly 1 indicates parity between the two groups. The further from the parity range of 0.97 and 1.03, the greater the disparity between the two groups of interest.