Table 12.

Correlation of Biomarkers with the modified PDD-BI Autism Composite, ATEC, and SAS, with the correlation coefficient followed by the p-value in parentheses

	PDDBI	ATEC	SAS
Plasma Free Sulfate	-0.19 (n.s.)	-0.25 (n.s.)	-0.38 (0.006)
RBC Iron	0.36 (0.009)	0.27 (0.05)	0.12 (n.s.)
Serum Phosphorus	0.38 (0.006)	0.11(n.s.)	0.12 (n.s.)
Plasma Phenylalanine	-0.22 (n.s.)	-0.29 (0.03)	-0.43 (0.002)

Only biomarkers with values of R = 0.34 or greater are listed, corresponding to a p-value of 0.01 or lower. Note that since many correlations were investigated, these results are not highly significant, and are at most possibly significant.