Table 5.

Comparison on objective measures and reports of impairments between ADHD concordant and discordant groups and controls.

	Controls (n = 167)	Concordant ADHD group (n = 43)	Discordant ADHD group (n = 42) (only parent-reported ADHD)
Age	17.77 (2.20)	18.45 (2.90)	18.16 (3.23)
Male n (%)	127^c	34	36^a
IQ	110.23 (12.15)^b^,^c	97.35 (17.23)^a	94.21 (12.96)^a
DSF	10.46 (2.15)^b^,^c	9.26 (2.36)^a	9.33 (1.65)^a
DSB	8.04 (2.61)^b^,^c	5.98 (2.36)^a	6.48 (2.45)^a
RTV (CPT-OX)	79.05 (36.96)^b^,^c	99.02 (47.56)^a	122.81 (63.26)^a
RTV (Fast Task)	3.76 (0.89)^b^,^c	4.86 (0.90)^a	4.59 (0.77)^a
CE	0.86 (1.33)^b^,^c	2.05 (2.74)^a	2.17 (2.47)^a
OE	0.60 (1.00)^b^,^c	2.95 (3.87)^a	2.64 (4.36)^a
Cue P3	6.81 (0.44)^b	6.52 (0.52)^a	6.63 (0.56)
No-go P3	7.17 (0.38)^b^,^c	6.99 (0.51)^a	6.94 (0.48)^a
CNV	−3.84 (1.86)^b^,^c	−2.80 (1.87)^a	−2.81 (1.75)^a
Delta	1.45 (0.43)^c	1.59 (0.54)	1.68 (0.56)^a
Theta	−0.25 (0.51)^c	−0.14 (0.55)	−0.02 (0.65)^a
Alpha	−0.59 (0.61)^b^,^c	−0.37 (0.64)^a	−0.33 (0.77)^a
Beta	−1.80 (0.57)^c	−1.67 (0.66)	−1.56 (0.54)^a
Actigraph intensity	0.77 (0.55)^b^,^c	1.27 (0.76)^a	1.11 (0.72)^a
Actigraph count	0.03 (0.06)^b	0.05 (0.04)^a	0.05 (0.04)
Parent-reported impairment	2.73 (3.32)^b^,^c	17.44 (4.97)^a^,^c	15.26 (5.49)^a^,^b
Self-reported impairment	3.29 (3.14)^b^,^c	15.56 (4.46)^a^,^c	8.08 (4.20)^a^,^b

Concordant group: meeting ADHD criteria according to both self- and parent-report.

Discordant group: meeting ADHD criteria according to parent-report only.

Significantly (p < 0.05) different from controls.

Significantly (p < 0.05) different from concordant ADHD group.

Significantly (p < 0.05) different from discordant ADHD group.