Table 2.

Prevalence of Auditory Neuropathy/Dys-synchrony in Children with Permanent Hearing Loss

Study	Population	No. of Cases Permanent Hearing Loss	No. of AN/AD Cases	% of Total
Kraus et al. (1984)	Hg. impaired children	48	7	14.58
Park Lee. (1998)	Hg. impaired children	139	7	5.04
Vohr et al. (1998)	Universal screening	111	2	1.80
Rance et al. (1999)	“At-risk” infants	109	12	11.01
Berlin et al. (2000)	Hg. impaired children	1000	87	8.70
Cone-Wesson et al. (2000)	Universal screening	56	3	5.36
Lee et al. (2001)	Hg. impaired children	67	2	2.98
Madden et al. (2002)	Hg. impaired children	428	22	5.14
Tang et al. (2004)	Hg. impaired children	56	1	1.78
Rance et al. (in press)	“At-risk” infants	290	19	6.55