. Author manuscript; available in PMC: 2019 Apr 3.

Published in final edited form as: Res Dev Disabil. 2011 Mar 8;32(5):1580–1588. doi: 10.1016/j.ridd.2011.01.056

Table 1.

Demographics by Disability Status

Variable	TD (N=47)	ID (N=23)	χ² or t
Adolescents (12 years old)
Gender (% boys)	42.6	42.5	χ² =.04
Race (% Caucasian)	57.4	47.8	χ² =.73
Health (% in excellent health)	68.1	47.8	χ² = 3.09
Siblings
Age (mean age in years)	12.55(4.60)	10.39(4.26)	t= 1.83
Gender (% boys)	38.3	52.2	χ² = 1.51
Birth Order (% of siblings older than target)	53.2	30.4	χ² = 3.26
Mothers
Marital Status (% married)	78.7	73.9	χ² =.38
Work (% working outside the home)	74.5	52.2	χ² = 4.04^*
Education (% with college degree or higher)	61.7	26.1	χ² = 8.28^**

Note. TD = Typically Developing. ID = Intellectual Disability.

p<.05,

^**

p<.01