Table 3.

Stepwise linear regression for probability of chronic trajectory membership.

	R2	SE	df	F	p
Model 1—Demographic variables	0.216	0.258	6, 53	2.431	0.038*
Model 2—Trauma-related variables	0.325	0.249	10, 49	2.361	0.023*
Model 3—Baseline psychiatric variables	0.379	0.247	13, 46	2.160	0.028*
Model 4—SCR	0.662	0.184	14, 45	6.302	0.000001***

Note: Stepwise linear regression was performed with probability of chronic trajectory membership (all individuals with SCR included in analysis (n = 95)). In the first model, only demographic variables of age, gender, race, education, income and social support were included. In Model 2, trauma-related variables were added including trauma type, if the index trauma was intimate partner violence, patient-rated severity of the trauma, and the number of similar traumas previously experienced. In Model 3, baseline psychiatric variables of childhood trauma load, baseline PTSD, and baseline depression were added. In Model 4, the SCR in the ED was added; R² change = 0.283, F change = 37.72. PTSD: posttraumatic stress disorder; SCR: skin conductance response; ED: emergency department.

^*p < 0.05; ***p < 0.001.