Table 5.

Summary of linear regression models predicting brain volumes (n=28).

	Predictor	B	SE B	β	Δ adj. r2	F Δ adj. r2
DLPFC
Step 1	WBV*	0.035	0.007	0.709	0.490	11.529***
	age	−0.097	0.218	−0.087
	htn	1.359	2.158	0.109
Step 2	GAD	0.998	2.451	0.085	0.002	0.085
Step 3	PSWQ	−0.032	0.108	−0.065	0.004	0.090
Step 4	GAD×PSWQ	−0.106	0.247	−0.491	0.005	0.183
mOFC
Step 1	WBV*	0.033	0.008	0.628	0.293	6.328**
	age	0.197	0.155	0.221
	htn	−2.296	1.647	−0.245
Step 2	GAD	−0.899	1.871	−0.097	0.043	0.954
Step 3	PSWQ*	0.205	0.082	0.546	0.145	12.932***
Step 4	GAD×PSWQ	0.094	0.156	0.607	0.007	0.362

Note.

^*P<0.05;

^**P<0.01;

^***P<0.005;

WBV=whole brain volume; htn=hypertension; DLPFC=dorsolateral cortex; mOFC=medial orbital cortex. Volumes measured in cubic centimeters, no cerebrospinal fluid.