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(a) Sociodemographic information for each group, before exclusion (N = 102).
| Groups | ||||
|---|---|---|---|---|
| Preschool | First grade | Third grade | Sixth grade | |
| Sample size (N) | 40 | 20 | 20 | 22 |
| Number of females (%) | 17 (43) | 14 (70) | 11 (55) | 11 (50) |
| Mean age in months (SD) | 51 (9.31) | 86 (4.66) | 111 (4.91) | 147 (4.69) |
| Age range in months | 36–68 | 72–92 | 104–124 | 142–156 |
