Table 2.
Frequency of schizophrenia spectrum disorders, definite psychotic symptoms, and subthreshold psychotic symptoms across age groups
| Children 6–11 y.o. (N = 45) |
Adolescents 12–17 y.o. (N = 39) |
Adults >18 y.o. (N = 20) |
Total sample (N = 104) |
p | |
|---|---|---|---|---|---|
| Any schizophrenia spectrum disorder | 0 (0 %) | 3 (8 %) | 7 (35 %) | 10 (10 %) | <0.001 |
| Schizophrenia | 0 (0 %) | 1 (3 %) | 2 (10 %) | 3 (3 %) | |
| Schizoaffective disorders | 0 (0 %) | 0 (0 %) | 3 (15 %) | 3 (3 %) | |
| Other psychotic disordersa | 0 (0 %) | 2 (5 %) | 2 (10 %) | 4 (4 %) | |
| Any definite psychotic symptom | 0 (0 %) | 9 (23 %) | 7 (35 %) | 16 (15 %) | <0.001 |
| Definite hallucinations | 0 (0 %) | 9 (23 %) | 6 (30 %) | 15 (14 %) | |
| Definite delusions | 0 (0 %) | 4 (10 %) | 5 (25 %) | 9 (9 %) | |
| Any subthreshold psychotic symptom | 7 (16 %) | 12 (31 %) | 8 (40 %) | 27 (26 %) | 0.080 |
| Subthreshold hallucinations | 4 (9 %) | 6 (15 %) | 4 (20 %) | 14 (13 %) | |
| Subthreshold delusions | 4 (9 %) | 7 (18 %) | 7 (35 %) | 18 (17 %) |
aSchizophreniform disorder, delusional disorder, brief psychotic disorder, and psychotic disorder NOS