. Author manuscript; available in PMC: 2015 Jun 25.

Published in final edited form as: Disabil Health J. 2013 Jul 25;6(4):333–342. doi: 10.1016/j.dhjo.2013.05.003

Table 5.

Median age at first evaluation and/or diagnosis of autism spectrum disorder by co-occurring vision impairment or hearing loss, Metropolitan Atlanta Developmental Disabilities Surveillance Program, 2000–2008

Median age at earliest evaluation
	N	Median (months)
ASD with VI	20	46
ASD without VI	2078	50
TOTAL ASD	2098	Median difference p value = 0.37
ASD with HL	18	40
ASD without HL	2080	50
TOTAL ASD	2098	Median difference p value = 0.02^a

Median age at earliest known ASD diagnosis
	N	Median (months)

ASD with VI	12	79
ASD without VI	1233	56
TOTAL ASD	1245	Median difference p value = 0.02^a
ASD with HL	11	57
ASD without HL	1234	56
TOTAL ASD	1245	Median difference p value = 0.83

ASD = autism spectrum disorder; HL = hearing loss; MADDSP = Metropolitan Atlanta Developmental Disabilities Surveillance Program; SD = standard deviation; VI = vision impairment.

p value significant at <0.05.