Table 1 Demographic characteristics
Control group | Total group | 8–9 years | 10–11 years | 12–13 years | 14–17 years |
|---|---|---|---|---|---|
(n = 69) | (n = 69) | (n = 14) | (n = 31) | (n = 12) | (n = 12) |
Age Years, Median (IQR) | 11.2 (10.2 to 12.6) | 9.0 (8.7 to 9.4) | 11.1 (10.6 to 11.3) | 12.5 (12.5 to 13.0) | 16.5 (14.7 to 17.6) |
Sex n (%) Male | 28 (40.6) | 6 (42.9) | 13 (41.9) | 4 (33.3) | 5 (41.7) |
Ethnicity n (%) Western European | 47 (68.1) | 7 (50.0) | 20 (64.5) | 9 (75.0) | 11 (91.7) |
Handedness n (%) Right | 66 (95.7) | 13 (92.9) | 31 (100) | 11 (91.7) | 11 (91.7) |
Reaction time ms, Median (IQR) | 297 (274 to 327) | 313 (290 to 335) | 307 (280 to 357) | 300 (260 to 310) | 259 (238 to 294) |