Table 3. List of input data for HDI dataset.

Dataset	Description	Source	Notes
Sub-national HDI data for Europe	Spatial resolution: sub-national at NUTS* levelsTemporal resolution: year 2007Unit: —	Eurostat41	List of countries for which data is available is given in Supplementary Information.
Sub-national HDI data for elsewhere	Spatial resolution: sub-national (i.e., province, state, etc.; depending on country in question)Temporal resolution: varies around year 2010, depending on country in questionUnit: —	Varying sources, see details in Supplementary Information	List of countries for which data is available is given in Supplementary Information.
National HDI	Spatial resolution: nationalTemporal resolution: annual data for years 1990–2015.Unit: —	UNDP30	See category ‘No data, regional average’ in Fig. 6 for countries for which no national data were available. For these, regional average values were used (see methods)

*NUTS stands for Nomenclature of territorial units for statistics and is used by EUROSTAT to report its data at sub-national level.