Table 4.

Test-retest reliabilities of pediatric power studies.

Paper	Age(s) at First Test	Sample Size	Time to Retest	Paradigm	Type of Power	Reliability Measure(s)	Frequency Band	Reliability
Winegust et al. (2014)	Mean age of 15.9 years	N = 9	1 month	Resting-state	Absolute	ICC	Left mid-frontal alpha	0.74
							Right mid-frontal alpha	0.73
					Absolute	Pearson's r	Left mid-frontal alpha	0.74
							Right mid-frontal alpha	0.73
Levin et al. (2020)	Mean age of 6.6 years (TD group)	N = 26	Median 6 days	Resting-state	Relative	ICC	Total power	0.86
					Spectral offset (SpecParam)	ICC	Power spectral density (PSD)	0.48
					Aperiodic slope (SpecParam)	ICC	Power spectral density (PSD)	0.28
					Number of peaks (SpecParam)	ICC	Power spectral density (PSD)	0.02
					Largest alpha peak: center (SpecParam)	ICC	Alpha	0.70
					Largest alpha peak: amplitude (SpecParam)	ICC	Alpha	0.86
					Largest alpha peak: bandwidth (SpecParam)	ICC	Alpha	0.42
	Mean age of 8 years (ASD group)	N = 21	Median 6 days	Resting-state	Relative	ICC	Total power	0.81
					Spectral offset (SpecParam)	ICC	Power spectral density (PSD)	0.53
					Aperiodic slope (SpecParam)	ICC	Power spectral density (PSD)	0.70
					Number of peaks (SpecParam)	ICC	Power spectral density (PSD)	0.23
					Largest alpha peak: center (SpecParam)	ICC	Alpha	0.62
					Largest alpha peak: amplitude (SpecParam)	ICC	Alpha	0.83
					Largest alpha peak: bandwidth (SpecParam)	ICC	Alpha	0.34
Gasser et al. (1985)	10–13 years	N = 26	10 months	Resting-state	Absolute	Spearman rank correlations	Delta	0.59
							Theta	0.70
							Alpha	0.76
							Beta	0.62
					Relative	Spearman rank correlations	Delta	0.47
							Theta	0.63
							Alpha	0.76
							Beta	0.76
Fein et al. (1983)	10–12 years	N = 32	4–5 hours	Resting-state	Absolute	ICC	Total power	> 0.90
					Relative	ICC	Total power	0.70 - 0.90
Vincent et al. (2021)	5 months, 7 months, or 12 months	N = 149	24–31 months	Resting-state	FAAln	Pearson's r	Alpha	-0.02
					FAAratio	Pearson's r	Alpha	-0.02
					FAAlnratio	Pearson's r	Alpha	-0.07
					FAAlnrel	Pearson's r	Alpha	0.36
Anaya et al. (2021)	8 months	N = 43–89	4 months	Resting-state	Frontal asymmetry	Pearson's r (rank-order stability)	Alpha	0.09
					Delta-Beta coupling	Pearson's r (rank-order stability)	Delta/Beta Ratio	-0.06
			6 months	Resting-state	Frontal asymmetry	Pearson's r (rank-order stability)	Alpha	-0.19
					Delta-Beta coupling	Pearson's r (rank-order stability)	Delta/Beta Ratio	0.08
			10 months	Resting-state	Frontal asymmetry	Pearson's r (rank-order stability)	Alpha	0.27
					Delta-Beta coupling	Pearson's r (rank-order stability)	Delta/Beta Ratio	-0.05
Webb et al. (2022)	6–11.5 years (TD Group)	N = 119	6 weeks	Resting-state	Absolute	ICC	Delta	0.39
							Theta	0.51
							Beta	0.68
							Alpha	0.67
							Gamma	0.45
					Aperiodic slope (SpecParam)	ICC	2–50 Hz	0.54
	6–11.5 years (ASD Group)	N = 280	6 weeks	Resting-state	Absolute	ICC	Delta	0.66
							Theta	0.68
							Beta	0.75
							Alpha	0.73
							Gamma	0.56
					Aperiodic slope (SpecParam)	ICC	2–50 Hz	0.59