Table 1 Demographic and descriptive participant information
| Â | Time point administered | |||||
|---|---|---|---|---|---|---|
Prescreening | Longitudinal sample at prescreening | Time 1 (end of 1st grade) | Time 2 (end of 2nd grade) | Time 3 (end of 3rd grade) | Time 4 (end of 4th grade) | |
Sample Size (N) | 1297 | 340 | 340 | 271 | 151 | 81 |
Cohort 1 | 821 | 140 | 140 | 107 | 85 | 81 |
Cohort 2 | 476 | 200 | 200 | 164 | 66 | – |
Age | 7.08 (0.39) [5.83–8.67] | 7.09 (0.35) [6.33–8.0] | 7.46 (0.35) [6.42–8.67] | 8.43 (0.34) [7.75–9.33] | 9.42 (0.33) [8.67–10.08] | 10.44 (0.33) [9.75–11.17] |
Cohort 1 | 7.01 (0.39) [5.83–8.67] | 7.03 (0.34) [6.33–8.0] | 7.44 (0.34) [6.75–8.67] | 8.45 (0.34) [7.75–9.08] | 9.46 (0.33) [8.75–10.08] | 10.44 (0.33) [9.75–11.17] |
Cohort 2 | 7.20 (0.36) [6.33–8.33] | 7.13 (0.36) [6.33–8.0] | 7.47 (0.36) [6.42–8.33] | 8.41 (0.34) [7.75–9.33] | 9.36 (0.31) [8.67–9.83] | – |
Sex | 601M, 696F | 159M, 181F | 159M, 181F | 118M, 153F | 72M, 79F | 35M, 46F |
Cohort 1 | 377M, 444F | 65 M, 75F | 65 M, 75F | 46M, 61F | 44M, 41F | 35M, 46F |
Cohort 2 | 224M, 252F | 94 M, 106F | 94 M, 106F | 72M, 92F | 28M, 38F | – |