Table 3.

Hierarchical multiple regression parameters with alcohol problems questionnaire common score as the dependent variable.

	Unstandardized and standardized coefficients			Squared semi-partial correlation coefficients	Obtained I and I values		Obtained I values
	B	SE B	β	sr 2	t a	P	R	R 2	∆R 2	p
Model 1							0.226	0.051	0.051	<0.0001
Constant	6.231	0.714			8.725	<0.0001
Age	−0.069	0.012	−0.231	0.051	−5.722	<0.0001
Gender	−0.345	0.307	−0.045	0.002	−1.122	0.262
Model 2							0.468	0.219	0.168	<0.0001
Constant	1.871	0.752			2.488	0.013
Age	−0.054	0.011	−0.183	0.031	−4.948	<0.0001
Gender	0.172	0.283	0.023	0.000484	0.609	0.543
AUDIT-C	0.599	0.052	0.417	0.168	11.437	<0.0001
Model 3							0.626	0.392	0.173	<0.0001
Constant	−0.048	0.688			−0.070	0.944
Age	−0.046	0.010	−0.156	0.022	−4.716	<0.0001
Gender	−0.029	0.252	−0.004	0.000016	−0.115	0.908
AUDIT-C	0.568	0.046	0.395	0.151	12.246	<0.0001
Anxiety	0.111	0.028	0.155	0.016	3.964	<0.0001
Depression	0.298	0.036	0.313	0.068	8.207	<0.0001
Model 4							0.666	0.444	0.052	<0.0001
Constant	3.985	1.427			2.792	0.005
Age	−0.025	0.010	−0.084	0.006	−2.520	0.012
Gender	0.138	0.246	0.018	0.000289	0.562	0.574
AUDIT-C	0.470	0.048	0.327	0.088	9.743	<0.0001
Anxiety	0.072	0.028	0.100	0.006	2.558	0.011
Depression	0.217	0.040	0.223	0.026	5.307	<0.0001
Motivational drive	−0.061	0.043	−0.052	0.002	−1.415	0.158
Organisation	−0.108	0.033	−0.122	0.010	−3.277	0.001
Strategic planning	−0.011	0.033	−0.012	0.0001	−0.329	0.742
Impulse control	−0.190	0.036	−0.196	0.025	−5.223	<0.0001
Empathy	0.083	0.041	0.067	0.004	2.003	0.046

Depression and anxiety = hospital anxiety and depression scale subscales; motivational drive, organisation, strategic planning, impulse control and empathy = Executive Function Index subscales.

AUDIT-C: Alcohol Use Disorders Identification Test-Consumption.

^aModel 1: df = 608; model 2: df = 607; model 3: df = 605 and model 4: df = 600.