. Author manuscript; available in PMC: 2021 Mar 18.

Published in final edited form as: Am J Intellect Dev Disabil. 2013 Mar;118(2):141–155. doi: 10.1352/1944-7558-118.2.141

Table 1.

Child and Mother Demographic Characteristics by Ethnic Status

Variable	Anglo (n = 168) M (%)	Latino (n = 51) M (%)	t/χ^2a
Child
Mean age at testing in months (SD)	34.92 (2.80)	35.57 (3.14)	t = −1.35
Gender (% boys)	59.1	57.1	χ² = .06
Siblings (% yes)	72.7	77.6	χ² = .45
Mean BSID-II: MDI	87.16 (25.43)	74.57 (23.41)	t = 3.07^**
Mother and family
Marital status (% married)	87.0	75.5	χ² = 3.70^†
Mean mother age (years)	34.06 (5.97)	31.43 (5.04)	t = 2.78^*
Employment (% employed)	57.1	59.2	χ² = .06
Education (% bachelor of arts or higher)	52.6	22.4	χ² = 13.63^***
Family income (% 50k or higher)	52.9	36.7	χ² = 3.90^*

Note. Breakdowns of n are Anglo: 90 typically developing children, 78 children with a developmental disability; Latino: 17 typically developing children, 34 children with a developmental disability. BSID-II = Bayley Scales of Infant Development II; MDI = Mental Developmental Index. ^ats are used when standard deviations are reported.

^†

p < .10.

p < .05.

^**

p < .01.

^***

p < .001.