Table 1. Demographic and clinical characteristics of the study groups.

	PD group		HC group
	(n = 25)		(n = 25)
Variable	Mean	SD	Mean	SD	df	t	p
Age (years)	39.7	9.9	39.0	11.1	48	0.24	.81
[range]	[23–56]		[22–58]
Participant’s SES a	2.7	0.9	2.5	0.8	48	0.66	.52
Parental SES a	2.8	0.8	2.4	0.9	48	0.96	.20
PDSS Score	12.3	5.5			25
GAF Score	61.0	9.3			25
Duration of illness (years)	4.7	5.8			25

Abbreviations: PD, panic disorder; HC, healthy control subject; SES, socioeconomic status; PDSS, Panic Disorder Severity Scale; GAF, Global Assessment of Functioning

^a Higher scores mean lower socioeconomic status