Table 1 Sample description of keyage children before (i.e., cohorts 2016–2019) and during or after (i.e., cohorts 2020–2022) the Covid-19 pandemic
Cohorts | N children (% girls) | N test scores | Age [years] M (SD) | N schools |
|---|---|---|---|---|
Pre-pandemic (2016–2019) | 54,343 (51%) | 315,260 | 8.62 (0.28) | 500 |
During and after the pandemic (2020–2022) | 44,167 (51%) | 255,526 | 8.56 (0.28) | 495 |
Total | 98,510 (51%) | 570,786 | 8.59 (0.28) | 515 |