Anxiety disorders in children with Williams syndrome, their mothers, and their siblings: Implications for the etiology of anxiety disorders

Table 3 Prevalence of anxiety disorders in children with WS (N = 132), children in the general population, and children in the DD population

Type of anxiety disorder	WS		Population prevalence^a	DD population prevalence^b
Type of anxiety disorder	N	%	%	%
Separation anxiety disorder	8	6.1	2.3*	1.9*
Social phobia	3	2.3	4.5	1.9
GAD	10	7.6	3.1*	0**
OCD	2	1.5	–^c	1.5
Specific phobia	74	56.1	1.3**	6.8**
PTSD	2	1.5	–^c	–^c

*p < .01; **p < .001
^aPrevalence established using the Diagnostic Interview Schedule for Children Version 2.3 (DISC-2.3), Parent version
^bPrevalence established using the DISC-IV, Parent version
^cPrevalence not reported.

ISSN: 1866-1955