Table 4.

Summary of moderating effects of NU and RTP on relationship between PTSD and binge drinking

Number of binge drinking days in the past month
NU					RTP
Variable	β	t	P	ΔR2	Variable	β	t	P	ΔR2
Step 1					Step 1
Age	−.111	−1.810	.071	.103‡	Age	−.125	−2.042	.042	.110‡
Ethnicity	−.139	−2.385	.018		Ethnicity	−.137	−2.347	.020
Marital status	−.119	−1.979	.049		Marital status	−.129	−2.144	.033
Employment status	−.140	−2.319	.021		Employment status	−.130	−2.155	.032
Smoking status	.145	2.466	.014		Smoking status	.152	2.596	.010
Step 2					Step 2
Age	−.108	−1.755	.080	.000	Age	−.125	−2.011	.045	.000
Ethnicity	−.140	−2.390	.018		Ethnicity	−.138	−2.344	.020
Marital status	−.121	−2.001	.046		Marital status	−.130	−2.142	.033
Employment status	−.139	−2.309	.022		Employment status	−.130	−2.143	.033
Smoking status	.147	2.484	.014		Smoking status	.153	2.589	.010
Lifetime trauma	−.020	−.339	.735		Lifetime trauma	−.008	−.128	.899
Step 3					Step 3
Age	−.103	−1.675	.095	.012	Age	−.117	−1.898	.059	.014*
Ethnicity	−.142	−2.429	.016		Ethnicity	−.136	−2.327	.021
Marital status	−.116	−1.913	.057		Marital status	−.124	−2.057	.041
Employment status	−.131	−2.177	.030		Employment status	−.123	−2.037	.043
Smoking status	.137	2.325	.021		Smoking status	.143	2.428	.016
Lifetime trauma	−.049	−.797	.426		Lifetime trauma	−.037	−.606	.545
PTSD severity	.116	1.905	.058		PTSD severity	.121	1.999	.047
Step 4					Step 4
Age	−.128	−2.091	.038	.027†	Age	−.112	−1.803	.073	.004
Ethnicity	−.137	−2.385	.018		Ethnicity	−.127	−2.155	.032
Marital status	−.117	−1.959	.051		Marital status	−.120	−2.978	.049
Employment status	−.114	−1.905	.058		Employment status	−.127	−2.110	.036
Smoking status	.115	1.957	.051		Smoking status	.142	2.407	.017
Lifetime trauma	−.070	−1.146	.253		Lifetime trauma	−.034	−.560	.579
PTSD severity	.064	1.028	.305		PTSD severity	.126	2.069	.040
NU	.180	2.878	.004		RTP	.062	1.032	.303
Step 5					Step 5
Age	−.126	−2.039	.042	.000	Age	−.111	−1.789	.075	.002
Ethnicity	−.138	−2.392	.017		Ethnicity	−.127	−2.158	.032
Marital status	−.116	−1.936	.054		Marital status	−.121	−1.995	.047
Employment status	−.116	−1.927	.055		Employment status	−.125	−2.058	.041
Smoking status	.113	1.911	.057		Smoking status	.147	2.477	.014
Lifetime trauma	−.070	−1.150	.251		Lifetime trauma	−.038	−.615	.539
PTSD severity	.069	1.076	.283		PTSD severity	.121	1.978	.049
NU	.182	2.889	.004		RTP	.060	1.004	.316
NU*PTSD severity	−.021	−.344	.731		RTP*PTSD severity	−.047	−.801	.424

NU = negative urgency; RTP = risk-taking propensity; PTSD = posttraumatic stress disorder.

^*p < 0.05.

^†p < 0.01.

^‡p < 0.001.