Table 3.

Weekly Frequency of Drinking and Anxiety Measures Predicting ISI.

	Anxiety/Worry Measures
	PSWQ-A			GADSS			STAI-T			SIGH-A
	F†	β‡	p	F†	β‡	p	F†	β‡	p	F†	β‡	p
Step 1: Covariates and Main Effects
Years of Education	1.22	−0.07	0.27	0.21	−0.03	0.64	0.08	−0.02	0.78	0.07	−0.02	0.79
Race (0 = African American, 1 = Caucasian)	9.16	−0.19	0.003	2.75	−0.10	0.10	6.04	−0.15	0.01	2.35	−0.09	0.13
Number of Drinks/week	0.06	−0.02	0.81	0.20	−0.03	0.66	0.14	−0.02	0.71	0.01	0.00	0.94
Anxiety/Worry measure	42.19	0.40	<0.0001	69.47	0.50	<0.0001	64.33	0.48	<0.0001	77.00	0.52	<0.0001
Step 2: Interaction
Drinks/week* Anxiety/Worry	4.26	−0.40	0.04	2.90	−0.27	0.09	2.71	−0.43	0.10	1.67	−0.15	0.20
Full Model R2		0.22			0.29			0.28			0.31

^†Step 1 covariates and main effects: df_numerator= 1, df_denominator= 210; Step 2 interaction: df_numerator= 1, df_denominator= 209

^‡Standardized beta weights

ISI = Insomnia Severity Index; PSWQ-A = Penn State Worry Questionnaire-Abbreviated; GADSS = Generalized Anxiety Disorder Severity Scale; STAI-T = Trait subscale of the State-Trait Anxiety Inventory; SIGH-A = Structured Interview Guidelines for the Hamilton Anxiety Rating Scale