Table 3.

Posttraumatic Stress Disorder (PTSD) Group Comparisons Within Low, Ambiguous, and High Threat Conditions for Heart Rate, Skin Conductance, and Electromyogram

	Heart Rate			Skin Conductance			Electromyogram
	Difference	95% CI	d	Difference	95% CI	d	Difference	95% CI	d
Low threat
Past vs. none	0.27	[−0.86, 1.40]	0.09	0.08	[−0.02, 0.17]	0.31	0.44	[−0.45, 1.32]	0.18
Current vs. none	1.62	[.53, 2.72]	0.53	0.07	[−.02, .16]	0.30	0.12	[−.72, .95]	0.05
Current vs. past	1.35	[−.04, 2.74]	0.40	0.01	[−0.12, 0.11]	−0.03	−0.32	[−1.39, .75]	−0.13
Ambiguous threat
Past vs. none	−0.11	[−1.24, 1.02]	−0.04	0.05	[−0.05, 0.14]	0.24	0.49	[−0.40, 1.37]	0.19
Current vs. none	1.90	[0.81, 3.00]	0.51	0.09	[0.00, 0.18]	0.37	0.08	[−0.75, 0.92]	0.03
Current vs. past	2.01	[0.63, 3.39]	0.52	0.04	[−0.07, 0.16]	0.19	−0.40	[−1.47, 0.66]	−0.17
High threat
Past vs. none	0.05	[−1.08, 1.17]	0.01	0.08	[−0.01, 0.17]	0.35	0.79	[−0.10, 1.68]	0.31
Current vs. none	1.16	[0.07, 2.24]	0.29	0.07	[−0.02, 0.15]	0.28	−0.01	[−0.85, 0.82]	0.00
Current vs. past	1.11	[−0.27, 2.49]	0.28	0.00	[−0.13, 0.10]	−0.07	−0.80	[−1.87, 0.26]	−0.31