Table 4.

Developmental Characteristics by Seizure Group.

Developmental Diagnosis	Control	Clinical Seizures	Subclinical Seizures
Autism Disorder	61%	73% ‡	78% ‡,ns
PDD-NOS	22%	19% ns	16% ns,ns
Asperger Syndrome	17%	8% †	6% ‡,ns
Developmental Profile	Control	Clinical Seizures	Subclinical Seizures
Regression	18%	28% ‡	38% †,ns
Plateau	7%	4% ns	8% ns,ns
Symptoms from infancy	34%	39% ns	31% ns,ns
No early symptoms	34%	29% ns	23% ns,ns

‡p < = 0.001; †p < = 0.0001

For each characteristic listed, statistical comparisons were made between the clinical seizure group and the control group (superscript after the clinical seizure percentage), the subclinical seizure group and the control group (1^st superscript after the subclinical seizure percentage) and between the clinical and subclinical seizure group (2^nd superscript after the subclinical seizure percentage). Since there are 3 developmental diagnosis categories and 3 comparisons for each diagnosis category resulting in 9 comparisons. The Bonferroni correction for developmental diagnosis portion of the table results in an alpha of 0.05/9 = 0.0056, so we have set the alpha to p < = 0.001 to be conservative. Since there are 4 developmental profile categories and 3 comparisons for each developmental profile category resulting in 12 comparisons. The Bonferroni correction for the developmental profile portion of the table results in an alpha of 0.05/12 = 0.0042, so we have set the alpha to p < = 0.001 to be conservative.