Table 2.

Family characteristics of the sample (n = 237)

	Mean (± SD, range) or frequency (%)
Maternal
Age at birth of ASD child (years)	30.3 (± 5.2, 18.9–43.8)
Education
Elementary	33 (13.9%)
High school	138 (58.2%)
University	66 (27.8%)
Paternal
Age at birth of ASD child (years)	33.5 (± 6.2, 20.3–57.3)
Education
Elementary	45 (19.0%)
High school	115 (48.5%)
University	68 (28.7%)
Unknown	9 (3.8%)
Family socioeconomic status
Low	51 (21.5%)
Middle	159 (67.1%)
High	22 (9.3%)
Unknown	5 (2.1%)
Parents
Live together	179 (75.5%)
Separated or divorced	58 (24.5%)

SD standard deviation, ASD autism spectrum disorders