. Author manuscript; available in PMC: 2012 Aug 9.

Published in final edited form as: J Ment Health Res Intellect Disabil. 2011 Aug 9;4(3):206–226. doi: 10.1080/19315864.2011.596990

Table 1.

Demographics for Families of Typically Developing and Developmentally Delayed Children

Demographic	TD (n = 143)	DD (n = 103)	t or X²
Child
Sex % (n) Male	49.7 (71)	64.1 (66)	X² = 5.05^*
Race % (n) African American	11.9 (17)	3.9 (4)	X² = 20.51^***
Asian	4.9 (7)	1.0 (1)
Caucasian	60.1 (86)	59.2 (61)
Hispanic	8.4 (12)	26.2 (27)
Other	14.7 (21)	9.7 (10)
Mother/Family
Age in Years at Intake M (SD)	34.1 (5.51)	32.7 (6.35)	t = −1.82
Grade Completed M (SD)	15.7 (2.51)	14.45 (2.38)	t = −4.00^***
Family Income % (n) <$15k	6.3 (9)	13.6 (14)	X² = −15.19^*
$15–25k	6.3 (9)	16.5 (17)
$25–35k	8.5 (12)	11.7 (12)
$35–50k	19.7 (28)	15.5 (16)
$50–70k	18.3 (26)	17.5 (18)
$70–95k	21.1 (30)	10.7 (11)
>$95k	19.7 (28)	14.6 (15)

Note.

p < .05.

^***

p < .001.