Table 1.

Results of regression analyses on concurrent and lifetime Phe measures and VEP amplitudes (amp) and latencies (lat). Regression results are reported only if standardized residuals were below three and Cook’s distances were below one and the regression model was significant. R² = portion of explained variance in the VEP components. For example: Phe levels at the age of 5 accounted for 25% (.0252) of the variance in P110 amplitude at the occipital sites

Phe measure	VEP component	Sites	R2	df	F	P
Conc. Phe	P110 lat	O2	.048	1/61	4.05	.049
Phe age 4	P110 amp	O1, O2, Oz	.119	2/51	4.44	.017
	N75 lat	O2	.056	1/51	4.04	.050
Phe age 5	P110 amp	O1, O2, Oz	.252	2/52	9.68	.001
	N75 lat	O1, O2, Oz	.151	2/53	5.64	.006
Phe age 6	P110 amp	O1, O2, Oz	.145	2/53	5.51	.007
Phe age 9	N75 amp	O2	.117	1/41	6.55	.014