Table 4.

Hierarchical regressions predicting current IQ, working memory, processing speed, and verbal learning and memory in the overall sample.

Outcome variable	Block	Predictor variables	b	SE b	β	sr2	p	R	R2	ΔR2
Current IQ	Block 1	Constant	74.30	8.07			<0.001	0.28	0.08	0.07
		Years of Education/ Training	1.82	0.63	0.28	0.28	0.005
	Block 2	Constant	95.06	7.90			<0.001	0.55	0.31	0.29
		Years of Education/ Training	0.98	0.57	0.15	0.14	0.087
		FEP Membership	−15.26	2.64	−0.50	−0.48	<0.001
	Block 3	Constant	105.01	9.19			<0.001	0.58	0.33	0.31
		Years of Education/ Training	1.07	0.56	0.16	0.16	0.060
		FEP Membership	−14.47	2.63	−0.47	−0.45	<0.001
		BMI	−0.48	0.24	−0.17	−0.17	0.045
Working memory	Block 1	Constant	4.89	1.18			<0.001	0.16	0.03	0.02
		Years of Education/ Training	0.15	0.09	0.16	0.16	0.099
	Block 2	Constant	6.91	1.26			<0.001	0.37	0.13	0.12
		Years of Education/ Training	0.07	0.09	0.08	0.07	0.427
		FEP Membership	−1.48	0.42	−0.34	−0.33	0.001
	Block 3	Constant	7.56	1.49			<0.001	0.37	0.14	0.11
		Years of Education/ Training	0.08	0.09	0.08	0.08	0.394
		FEP Membership	−1.43	0.43	−0.33	−0.31	0.001
		BMI	−0.03	0.04	−0.08	−0.08	0.418
Processing speed	Block 1	Constant	3.65	1.74			0.038	0.30	0.09	0.08
		Years of Education/ Training	0.42	0.14	0.30	0.30	0.003
	Block 2	Constant	6.30	1.87			0.001	0.42	0.18	0.16
		Years of Education/ Training	0.31	0.13	0.23	0.22	0.021
		FEP Membership	−1.94	0.63	−0.30	−0.29	0.002
	Block 3	Constant	4.45	2.19			0.045	0.44	0.20	0.17
		Years of Education/ Training	0.30	0.13	0.21	0.21	0.028
		FEP Membership	−2.09	0.63	−0.32	−0.31	0.001
		BMI	0.09	0.06	0.15	0.15	0.116
Verbal learning and memory	Block 1	Constant	6.28	3.38			0.066	0.23	0.05	0.04
		Years of Education/ Training	0.63	0.26	0.23	0.23	0.019
	Block 2	Constant	12.60	3.55			0.001	0.42	0.18	0.16
		Years of Education/ Training	0.38	0.26	0.14	0.13	0.146
		FEP Membership	−4.65	1.19	−0.37	−0.35	<0.001
	Block 3	Constant	14.12	4.21			0.001	0.43	0.18	0.16
		Years of Education/ Training	0.39	0.26	0.14	0.14	0.135
		FEP Membership	−4.53	1.21	−0.36	−0.34	<0.001
		BMI	−0.07	0.11	−0.06	−0.06	0.501

Note. Block 4 not displayed here due to non-significance of interaction between BMI and FEP/healthy control group membership.