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. 2021 Mar 10;592(7854):403–408. doi: 10.1038/s41586-021-03323-7

Extended Data Table 1.

Country–year observations by disaggregation and region

graphic file with name 41586_2021_3323_Tab1_ESM.jpg

Counts of country–year observations by region and disaggregation (schooling level and subject) are shown. The database includes 2,023 observations across all countries from 2000 to 2017.