Table 1:

Diagnostic and Demographic Breakdown of EOP Cohort

Characteristic	Full EOP Sample (N=137)	%	EOP without ASD or ID (n=89)	%	EOP without Schizophrenia (n=99)	%	EOP Onset <13 Years (n=101)	%
Sex
Male	88	64.2	50	56.2	63	63.6	65	64.4
Female	49	35.8	39	43.8	36	36.4	36	35.6
Race
Asian or Pacific Islander	3	2.2	3	3.4	2	2.0	2	2.0
Black/African American	21	15.3	15	16.9	16	16.2	12	11.9
Two or more races	2	1.5	2	2.2	0	0.0	2	2.0
White	90	65.7	56	62.9	65	65.7	67	66.3
Unknown/Not available	21	15.3	13	14.6	16	16.2	18	17.8
Ethnicity
Hispanic/Latino	22	16.1	15	16.9	16	16.2	15	14.9
Not Hispanic/Latino	91	66.4	62	69.7	66	66.7	67	66.3
Unknown/Not available	24	17.5	12	13.5	17	17.2	19	18.8
Age at Psychosis Symptom Onset
<8 years	38	27.7	23	25.8	27	27.3	38	37.6
8-12 years old	63	46.0	43	48.3	43	43.4	63	62.4
13-18 years old	36	26.3	23	25.8	29	29.3	--	0.0
Primary Psychosis Spectrum Disorder
Schizophrenia	38	27.7	21	23.6	--	0.0	31	30.7
Affective Psychosis
Schizoaffective Disorder	11	8.0	6	6.7	11	11.1	8	7.9
(Bipolar Type)
Schizoaffective Disorder	8	5.8	8	9.0	8	8.1	5	5.0
(Depressed Type)
MDD Psychotic Features	17	12.4	15	16.9	17	17.2	10	9.9
BP Psychotic Features	17	12.4	13	14.6	17	17.2	12	11.9
Schizophreniform	2	1.5	0	0.0	2	2.0	2	2.0
Disorder
Brief Psychotic Disorder	1	0.7	0	0.0	1	1.0	0	0.0
Other Specified or	43	31.3	26	29.2	43	43.4	33	32.7
Unspecified
Schizophrenia Spectrum
and Other Psychotic
Disorder
Co-Occurring Diagnoses
Autism Spectrum	47	34.2
Disorders (ASD)
Intellectual Disability	17	12.4	--	0.0	10	10.1	11	10.9
History of Seizures	24	17.5	12	13.5	15	15.2	19	18.8