TABLE 1.
Demographic and clinical information on samples examined. The three groups were matched on age, sex and race
| TD (N = 42) | CHR (N = 32) | AOP (N = 13) | p | |
|---|---|---|---|---|
| Mean age, years (SD) | 17.8 (2.8) | 18.5 (2.9) | 17.2 (1.7) | 0.31 |
| Age range, years | 13–23 | 13–25 | 13–20 | 0.31 |
| Sex: Female/Male | 21/21 | 15/17 | 8/5 | 0.67 |
| Race: Caucasian/African American/Asian/Multiple | 36/2/3/1 | 26/4/1/1 | 9/4/0/0 | 0.24 |
| Mean SES (SD) | 49.4 (10.9) | 39.8 (12.0) | 38.5 (9.5) | 1.3e-03 |
| Mean Intelligence Quotient (SD) | 111.4 (9.2) | 105.4 (10.9) | 103.4 (13.0) | 0.02 |
| Mean of total positive symptoms (SD) | 0.1 (0.4) | 11.5 (3.8) | 19.0 (3.5) | 8.6e-40 |
| Mean of total negative symptoms (SD) | 0.3 (0.8) | 12.8 (6.0) | 12.1 (6.2) | 5.0e-21 |
| N prescribed antipsychotic medication | 0 | 8 | 8 | NA |
Note: In comparison to typically developing adolescents and adults (TD), the clinical high risk for developing psychosis (CHR) and adolescent-onset psychosis (AOP) groups had significantly lower intelligence quotient (IQ), parental socioeconomic status (SES), and endorsed higher levels of total positive and negative symptoms.