Table 4.

Results of regression analyses (patients only).

	Variable	Standardized beta	T	p	R2	F[df]	R2 change	Sign. Fchange
Model 1					0.471	F[6, 79] = 11.725***	0.471	11.725***
Step 1	Age	0.729	7.756	0.000
	Sex	−0.157	−1.775	0.080
	Education	−0.193	−2.017	0.047
	Chlorpromazine (CPZ) equivalents	0.086	0.954	0.343
	Institutionalization	−0.266	−2.807	0.006
	Age at disease onset	−0.270	−2.881	0.005
Model 2					0.530	F[7, 75] = 12.060***	0.059	9.377**
Step 1	Age	0.671	7.295	0.000
	Sex	−0.184	−2.132	0.036
	Education	−0.051	−0.488	0.627
	CPZ equivalents	−0.034	−0.357	0.722
	Institutionalization	−0.304	−3.316	0.001
	Age at disease onset	−0.240	−2.667	0.009
Step 2	AES sum score	0.305	3.062	0.003
Model 3					0.578	F[9, 73] = 11.112***	0.049	4.196*
Step 1	Age	0.670	7.452	0.000
	Sex	−0.202	−2.425	0.018
	Education	−0.017	−0.168	0.867
	CPZ equivalents	−0.108	−1.136	0.260
	Institutionalization	−0.201	−2.113	0.038
	Age at disease onset	−0.160	−1.748	0.085
Step 2	AES sum score	0.352	3.573	0.001
Step 3	SAPS sum score	0.182	1.356	0.179
	Brief Psychiatric Rating Scale thought disturbance	0.093	0.674	0.502

*p ≤ 0.05, **p ≤ 0.01, and ***p ≤ 0.001.