Table 2.
Behavioral performance on stop signal task: ADHD, 22q11DS participants and healthy controls.
| Stop signal fMRI task: behavioral results | 22q11.2 participants (n = 15) |
ADHD participants (N = 23) |
Control participants (N = 30) | F-value |
p-Value |
Tukey's HSD post-hoc contrast p-value |
|---|---|---|---|---|---|---|
| Median Go RT (ms, ±SD) | 574.67 (163.88) | 458.28 (83.47) | 440.80 (81.35) | 5.260 | p = 0.008 | 22q11DS > Con(p < 0.01)ADHD = Conp = 0.821ADHD < 22q11DS(p < 0.01) |
| Go trials: % correct (%, ±SD) |
75.98% (8.93) | 98.10% (6.51) | 92.46% (11.44) | 13.99 | p < 0.001 | 22q11DS < Con(p < 0.01)ADHD = Conp = 0.089ADHD > 22q11DS(p < 0.01) |
| Stop trials: % inhibition (%, ±SD) |
53.54% (10.49) | 49.46% (8.41) | 49.59% (10.24) | 1.266 | p = 0.289 | NA |
| SSRT RT (ms, ±SD) |
194.04 (60.71) | 189.32 (58.49) | 167.17 (71.08) | 0.709 | p = 0.496 | NA |
We covaried for age and participant education in group comparisons of task performance variables, as age was associated with task performance and there was a significant difference between groups in years of education. The F-value and associated p-values in the table represent results from the ANCOVA. Tukey's HSD post-hoc contrast p-values represent pairwise contrasts run following on the ANOVA.