Skip to main content
. Author manuscript; available in PMC: 2009 Feb 7.
Published in final edited form as: J Autism Dev Disord. 2008 Feb 12;38(8):1518–1533. doi: 10.1007/s10803-007-0532-8

Table 1.

Summary of Participant Demographics

Pairwise p-value
Demographic ASD (n =50) DD (n =25) TD (n =50) F value ASD-DD ASD-TD
Parent’s education in years completed
 Mother (M, SD) 15.48a 2.08 15.22a 2.47 15.19a 2.25 0.24 .959 .883
 Father (M, SD) 15.73a 2.52 15.52a 2.71 15.40a 2.57 0.22 .986 .883
Parent’s age at child’s birth in years
 Mother (M, SD) 31.19a 4.93 31.94a 6.37 31.24a 5.56 0.13 .943 .999
 Father (M, SD) 32.99a 6.82 35.91a 5.50 33.71a 6.04 1.95 .162 .929
Males (%) 86.0 76.0 86.0
First born (%) 44.0 36.0 38.0
Ethnicity (%)
 Caucasian 72.0 68.0 84.0
 African American 16.0 20.0 14.0
 Hispanic 8.0 8.0 2.0
 Asian 4.0 4.0 0.0

Note: Means in the same row with different subscripts differ significantly at p <.05 on the post-hoc Dunnet T3 comparison. F-values are Welch corrected when necessary for violation of homogeneity of variance as assessed by Levene’s test.