TABLE 1.

Participant Characteristics for Children with Autism and Control Children

Group	n	Sex		Ethnicity		Age, yr	CSF Collection Time, h:min:s
		Female	Male	Caucasian	Other
Autism	36	12	24	27	9	4.72 ± 0.27	10:55:08 am ± 0:09:45
Control	36	12	24	19	17	4.66 ± 0.32	10:37:17 am ± 0:23:33

Fisher exact test was used to test whether the distribution of individuals to different groups differed by sex and ethnicity. For age and blood collection time, differences between groups were tested using a simple 1-way general linear model (values are reported as mean ± standard error). No significant differences were observed between children with autism and control children.

CSF = cerebrospinal fluid.