Assessment Period | Cohort M | SD | National Norm M | t | p |
January 2020 | 470.49 | 50.04 | 552.5 | −39.47 | <0.001 |
August 2020 | 475.67 | 52.31 | 557.5 | −37.68 | <0.001 |
January 2021 | 486.78 | 54.24 | 590.5 | −42.91 | <0.001 |
May 2021 | 495.64 | 55.57 | 616.0 | −56.91 | <0.001 |
August 2021 | 491.64 | 56.63 | 616.0 | −55.19 | <0.001 |