Table 1

Participant characteristics^*

Characteristic	ADHD n = 53	Control n = 53	p value
Age, yr	12.56 ± 2.00	12.44 ± 1.53	0.74
Female	4 (7.5)	4 (7.5)	> 0.99
IQ
Verbal	115.06 ± 15.22	115.51 ± 13.83	0.87
Performance	100.30 ± 13.47	107.77 ± 14.86	0.008
Full-scale	109.21 ± 12.32	113.26 ± 13.88	0.12
ADHD-RS
Inattention score	28.04 ± 3.77	15.78 ± 3.97	< 0.001
Hyperactivity/impulsivity score	22.20 ± 6.48	12.47 ± 2.89	< 0.001
Total score	50.24 ± 9.03	28.25 ± 5.87	< 0.001
Head motion parameters
Maximum motion, mm	1.14 ± 0.73	1.15 ± 0.96	0.93
Maximum motion, time point	188.30 ± 46.67	201.00 ± 37.70	0.13
Maximum rotation, degree	1.03 ± 0.73	1.02 ± 1.17	0.97
Maximum rotation, time point	175.04 ± 61.20	187.89 ± 55.77	0.26
Maximum translation, x axis, mm	0.10 ± 0.32	0.16 ± 0.34	0.39
Maximum translation, y axis, mm	−0.25 ± 0.48	−0.42 ± 0.53	0.09
Maximum translation, z axis, mm	0.17 ± 1.10	0.09 ± 1.24	0.73
Maximum roll rotation, degree	0.07 ± 0.33	0.06 ± 0.32	0.82
Maximum pitch rotation, degree	−0.01 ± 1.01	−0.08 ± 1.11	0.74
Maximum yaw rotation, degree	0.14 ± 0.51	0.16 ± 0.43	0.81
Mean root mean square, mm	0.50 ± 0.29	0.50 ± 0.35	0.96
Mean frame-wise displacement, mm	0.14 ± 0.06	0.13 ± 0.09	0.38
Mean DVARS	28.29 ± 3.54	27.07 ± 4.59	0.13

ADHD = attention-deficit/hyperactivity disorder; ADHD-RS = ADHD Rating Scale.
↵* Values are mean ± standard deviation or n (%). No observations were missing except for the ADHD-RS scores, which were available for 49 patients with ADHD and 48 control participants.