Table 2.

Predictors of Both Nonphysical Aggression Only and Physical Aggression as Compared With No Aggression

Predictors	Nonphysical aggression only			Physical aggression			Nagelkerke pseudo R2
	b	p-value	OR [95% CI]	b	p-value	OR [95% CI]
	Model 1a			Model 1b			.30
Male gender	0.30	.63	1.35 [0.40, 4.61]	0.76	.36	2.13 [0.42, 10.94]
Caucasian	−0.06	.89	0.95 [0.43, 2.10]	−0.90	.04	0.41 [0.17, 0.96]
Age	−0.05	.04	0.95 [0.91, 1.00]	−0.08	.02	0.92 [0.87, 0.99]
Income	0.07	.61	1.07 [0.82, 1.40]	−0.31	.06	0.74 [0.53, 1.02]
CPA	0.16	.73	1.17 [0.47, 2.92]	−0.60	.37	0.55 [0.15, 2.04]
Combat exposure	0.02	.57	1.02 [0.95, 1.10]	0.09	.04	1.09 [1.00, 1.19]
Alcohol problems	0.54	.15	1.72 [0.82, 4.61]	0.59	.17	1.80 [0.78, 4.16]
PTSD symptoms	0.04	.00	1.04 [1.02, 1.07]	0.03	.01	1.04 [1.01, 1.06]
	Model 2a			Model 2b			.33
Alcohol × PTSD	−0.06	.01	0.94 [0.91, 0.98]	0.01	.63	1.01 [0.96, 1.06]

Note. OR = odds ratio; CI = confidence interval; CPA = childhood physical abuse; PTSD = posttraumatic stress disorder.

Coefficients presented for Model 1 are from the main effects only model. Model 2 includes all variables from Model 1 in addition to the interaction term. The only significant change in main effects from Model 1 to Model 2 was a significant main effect of alcohol problems for nonphysical aggression only compared to no aggression (b = 1.01, p = .01, OR = 2.73 [95% CI, 1.27, 5.88]), which was superseded by the significant interaction between alcohol problems and PTSD symptom severity.