Table 2. Summary of the demographic data set.

N represents the number of participants.

	TD	DR	DD
Grade 1	N = 51 (22 girls, Age = 7.3 ± 0.5)	N = 6 (4 girls, Age = 7 ± 0.6)	N = 8 (2 girls, Age = 7.2 ± 0.5)
Grade 2	N = 40 (24 girls, Age = 8.3 ± 0.5)	N = 7 (1 girl, Age = 8.6 ± 0.5)	N = 10 (2 girls, Age = 8.4 ± 0.8)
Grade 3	N = 37 (19 girls, Age = 9.3 ± 0.5)	N = 1 (1 girl, Age = 9)	N = 20 (12 girls, Age = 9.3 ± 0.6)
Grade 4	N = 39 (18 girls, Age = 10.2 ± 0.5)	N = 2 (0 girls, Age = 10. ± 0.)	N = 28, (9 girls, Age = 10.2 ± 0.6)
Grade 5	N = 30 (12 girls, Age = 11.2 ± 0.8)	N = 2 (0 girls, Age = 11.5 ± 0.7)	N = 6 (2 girls, Age = 11.2 ± 0.4)
Grade 6	N = 16 (5 girls, Age = 12.1 ± 0.6)	N = 4 (1 girl, Age 11.7 = ± 0.5)	NA NA
Total	N = 213 (100 girls 113 boys)	N = 22 (7 girls 15 boys)	N = 72 (27 girls 45 boys)