. Author manuscript; available in PMC: 2012 Mar 1.

Published in final edited form as: J Anxiety Disord. 2010 Sep 15;25(2):185–191. doi: 10.1016/j.janxdis.2010.09.001

Table 1.

Positive Panic Attack Group Characteristics

Variable	Mean or %	SD
Age of Onset of Panic Attacks^a	18.27	7.20
Number of Years Experiencing Panic Attacks^a	4.85	5.10
Number of Panic Attacks in Past Year^a	7.16	9.28
Duration of “Typical” Panic Attack^a
Less than 10 minutes	58.5%
10-30 minutes	36.6%
30-60 minutes	4.9%
Panic Disorder Severity Scale (PDSS) - Total Score^b	5.80	4.94

Note: Descriptive statistics conducted among participants endorsing a positive panic attack history

Assessed with Panic Attack Questionnaire (Norton et al., 2008)

PDSS total score < 8 indicates sub-clinical panic disorder symptoms (i.e., PDSS score < 8; Shear et al., 2001).