The HAI is a measure of level of human capital.  Low levels of human assets indicate major structural impediments to sustainable development.  A lower HAI represents a lower development of human capital.  Since 2015 the CDP uses absolute thresholds for the HAI to determine inclusion and graduation eligibility.  The inclusion threshold has been set at 60.  The graduation threshold has been set at 10 per cent above the inclusion threshold at 66.  The HAI is composed of 5 indicators grouped into a health and education sub-index.  Original values for each HAI indicator are converted into index numbers using a max-min procedure.

Note: The composition of the HAI was revised in 2020.  The new composition now consists of (1) Under-five mortality rate; (2) Maternal mortality ration; (3) Prevalence of stunting; (4) Gross secondary school enrolment ration; (5) Adult literacy rate; and (6) Gender parity index for gross secondary school enrolment.

Source: https://www.un.org/development/desa/dpad/least-developed-country-category/ldc-criteria.html