Table 11. Baseline prodromal symptoms and prediction of conversion to psychosis versus nonconversion.

Predictor	Parameter Estimates						Overall Fit
	β	SE β	Wald	p	HR (eβ)	95% CI (eβ)	χ2	p
Unusual thought content	0.16	0.08	3.64	.056	1.17	1.00–1.38	9.67	.008
Suspiciousness	0.29	0.09	10.96	.001	1.33	1.12–1.58	17.05	<.001
Grandiose ideas	−0.04	0.09	0.19	.666	0.96	0.81–1.15	6.29	.043
Perceptual abnormalitiesa	<0.01	0.07	<0.01	.975	1.00	0.87–1.15	16.43	.001
Disorganized communication	0.24	0.08	8.42	.004	1.27	1.08–1.50	14.65	.001
Social anhedonia	0.19	0.07	7.07	.008	1.20	1.05–1.38	12.89	.002
Avolition	0.06	0.07	0.70	.404	1.06	0.93–1.22	6.33	.042
Expression of emotion	0.11	0.07	2.32	.128	1.12	0.97–1.29	7.93	.019
Experience of emotion and self	0.05	0.07	0.49	.483	1.05	0.92–1.20	5.68	.058
Ideational richness	0.23	0.07	9.90	.002	1.26	1.09–1.45	16.39	<.001
Occupational functioning	0.10	0.07	2.31	.128	1.10	0.97–1.26	8.04	.018

Note: The reference group is nonconversion. A Cox regression analysis was performed using standardized Premorbid Adjustment Scale ratings. The method is forced entry. The covariate for all analyses was early adolescent social maladjustment, and the year at baseline was an additional covariate for perceptual abnormalities. HR, hazard ratio; CI, confidence interval.

^aThe results for perceptual abnormalities remained nonsignificant when the year at baseline was not included as a covariate.