Table 2.

Mean (SD) for weighted energy units for site-Pz and regional time-frequency components, and results of statistical comparisons between Controls (n = 84) and the Any-EXT group (n = 219)

Principal Components (PC) Derived from 61-Channel Montage				Time-frequency Principal Components by Region
		Analogous component at site-Pz		Topographic Regions			ANOVA results
		Descriptives	T-test Results	Frontal	Central-Parietal	Posterior-Occipital	Group (G)	Region (R)	G x R
		Mean (SD)	p-values	Mean (SD)	Mean (SD)	Mean (SD)	p-values
Late slow-wave delta (PC1)	Controls	15.99 (10.54)	.005	3.40 (2.27)	8.68 (5.56)	5.78 (4.50)	.043	<.001	.022
	Any-EXT	12.22 (9.47)		3.33 (2.25)	7.52 (5.26)	4.58 (3.27)
P2-theta (PC2)	Controls	18.42 (10.28)	<.001	3.43 (2.36)	7.04 (4.42)	5.68 (2.98)	<.001	<.001	.005
	Any-EXT	14.65 (9.35)		2.86 (2.12)	5.45 (3.77)	4.41 (2.94)
P3 high-delta (PC3)	Controls	8.17 (4.75)	<.001	5.85 (3.72)	12.63 (7.77)	9.79 (5.86)	<.001	<.001	<.001
	Any-EXT	6.21 (4.44)		4.40 (3.44)	9.08 (6.67)	7.45 (4.77)
N1-P2-N2 delta (PC4)	Controls	8.33 (5.62)	.002	4.19 (2.84)	7.03 (4.07)	5.81 (3.46)	<.001	<.001	.022
	Any-EXT	6.92 (5.23)		3.76 (2.63)	5.70 (3.76)	4.86 (2.95)
N2-P3 theta (PC5)	Controls	15.86 (9.14)	.024	2.31 (1.56)	5.45 (3.82)	5.89 (3.30)	.027	<.001	.202
	Any-EXT	11.59 (7.96)		2.05 (1.55)	4.73 (3.74)	5.02 (3.01)
P2-N2 high-delta (PC6)	Controls	8.44 (4.73)	<.001	5.63 (4.15)	11.45 (8.06)	11.58 (7.32)	.001	<.001	.023
	Any-EXT	6.18 (4.36)		5.05 (3.75)	9.45 (7.36)	9.06 (5.92)
P2-N2-P3 delta (PC7)	Controls	22.82 (12.97)	<.001	7.07 (4.42)	15.98 (8.90)	10.54 (6.72)	<.001	<.001	.002
	Any-EXT	16.62 (11.46)		6.18 (4.27)	12.44 (8.69)	7.67 (5.64)
Late-P3 delta (PC8)	Controls	12.60 (8.47)	<.001	6.18 (3.46)	13.97 (7.75)	10.22 (6.26)	.001	<.001	.013
	Any-EXT	9.88 (6.86)		5.44 (3.58)	11.38 (7.24)	8.06 (5.32)

Note: “Any-EXT” refers to participants who met lifetime diagnosis for any of the seven EXT disorders in the study by age 29.