Table A27.

Results from stepwise regression models for eyes closed delta activity at electrode Fz.

		Unstandardized Coefficients		Standardized Coefficients
Step	Predictor	B	SE	β	p	R 2	ΔR2	F	p
1	Age	−0.057	0.008	−0.451	<0.0001	0.203	0.203	52.61	<0.0001
2	Age Inattention Hyp/imp	−0.056 −0.025 0.068	0.008 0.077 0.079	−0.448 −0.024 0.065	<0.0001 0.747 0.389	0.206	0.003	17.69	<0.0001
3	Age Inattention Hyp/imp Data quality (artifact-free segments in %)	−0.046 −0.042 0.000 −0.010	0.008 0.073 0.077 0.002	−0.365 −0.041 0.000 −0.301	<0.0001 0.570 0.995 <0.0001	0.285	0.078	20.21	<0.0001

N = 207. Hyp/imp = Hyperactivity/impulsivity. SE = standard error of B.