. Author manuscript; available in PMC: 2013 Jan 1.

Published in final edited form as: J Anxiety Disord. 2011 Oct 17;26(1):134–139. doi: 10.1016/j.janxdis.2011.10.004

Table 2.

Anxiety Sensitivity, Breath-Holding Duration, and PTSD Symptom Severity

Criterion Variable: PTSD Total Symptom Severity
	R²	t	β	sr²
Step 1	.11^**
Number of PTEs		1.69	.17	.03
Panic Attack Group		2.89^**	.30	.09
Step 2	.08^*
ASI-III		2.31^*	.25	.05
Breath-Holding Duration		-1.71	-.18	.03
Step 3	.02
Interaction Term		-1.30	-.13	.02

Criterion Variable: PTSD Re-experiencing Symptom Severity
	R²	t	β	sr²
Step 1	.07^*
Number of PTEs		1.90	.20	.04
Panic Attack Group		1.66	.17	.03
Step 2	.07^*
ASI-III		1.76	.20	.03
Breath-Holding Duration		-1.89	-.20	.04
Step 3	.01
Interaction Term		-.92	-.10	.01

Criterion Variable: PTSD Avoidance Symptom Severity
	R²	t	β	sr²
Step 1	.07^*
Number of PTEs		.99	.11	.01
Panic Attack Group		2.28^*	.24	.06
Step 2	.06^*
ASI-III		2.17^*	.24	.05
Breath-Holding Duration		-1.14	-.12	.01
Step 3	.05^*
Interaction Term		-2.15^*	-.23	.05

Criterion Variable: PTSD Hyperarousal Symptom Severity
	R²	t	β	sr²
Step 1	.11^**
Number of PTEs		.95	.10	.01
Panic Attack Group		3.11^**	.32	.10
Step 2	.12^**
ASI-III		3.38^**	.36	.11
Breath-Holding Duration		-1.15	-.12	.01
Step 3	.02
Interaction Term		-1.61	-.16	.02

Note:

p < .05

^**

p < .01

Number of PTEs = Number of potentially traumatic events endorsed on the CAPS – Life Events Checklist (Blake et al., 1995); Panic Attack Group = Past 2 year history of nonclinical, unexpected panic attacks (1 = no history, 2 = positive history) as assessed by the Structured Clinical Interview for DSM-IV Non-Patient Version (SCID-I/NP; First et al., 1995); Participant Sex (1 = male, 2 = female); ASI-III = Anxiety Sensitivity Index – III (Taylor et al., 2007); Breath-Holding Duration = Average latency to termination of breath-holding task in seconds (Hajek et al., 1987); CAPS = Clinician-Administered PTSD Scale (Blake et al., 1995).