Table 1.

Participant Characteristics and CAPE-42 Score Stratification.

	CAPE TOTAL HIGH 10% (n = 149)			CAPE TOTAL LOW 10% (n = 149)
	Mean	SE	SD	Mean	SE	SD
Gender (Male %)	33.60%			56.40%
Handedness (R %)	85.90%			82.60%
Age BL (y)	14.47	0.03	0.39	14.43	0.03	0.38
Age FU (y)	19.02	0.06	0.76	18.98	0.06	0.74
Wisc Verbal Score (BL)	111.15	1.32	15.66	106.72	1.27	15.24
Wisc Performance Score (BL)	108.49	1.33	15.79	105.2	1.20	14.42
Adrs Total Score (FU)	15.89	0.24	2.96	19.7	0.06	0.72
Audit Total Score (FU)	7.5	0.44	5.34	5.26	0.32	3.87
Dast Cannabis Total Score (FU)	1.59	0.21	2.52	0.54	0.08	1.02
Cape Total Score (FU)	111.64	1.74	21.26	9.54	0.39	4.75
Cape Positive Symptoms Score (FU)	33.09	1.27	15.48	3.23	0.24	2.98
Cape Bizarre Delusions Score (FU)	13.17	0.97	11.82	0.37	0.09	1.09
Cape Social Delusions Score (FU)	19.91	0.54	6.57	2.87	0.21	2.61
Cape Negative Symptoms Score (FU)	46.37	0.93	11.37	2.22	0.21	2.61
Cape Depressive Symptoms Score (FU)	32.18	0.61	7.49	4.09	0.21	2.54

WISC: Wechsler Intelligence Batter for Children³⁸; the average score is 100; higher scores indicate higher than average intelligence and lower scores indicate lower than average intelligence.

ADRS: Adolescent Depression Rating Scale³⁹; scores range from 0 to 60; higher scores indicate higher levels of adolescent depression.

AUDIT: Alcohol Use Disorders Identification Test⁴⁰; scores range from 0 to 40; higher scores indicate greater levels of alcohol abuse.

DAST: Drug Abuse Screening Test⁴¹; scores range from 0 to 10; higher scores indicate greater levels of cannabis abuse.

CAPE: Community Assessment of Psychic Experiences Questionnaire⁷; scores range from 0 to 294; higher scores indicated elevated presence of attenuated psychotic symptoms.

SD: Standard Deviation; SE: Standard Error.