Table 1. Demographic Information.

Demographic information of the participants included in the analyses (N=86 MRI scans at birth) and (N=32 MRI scans at 12-mo age).

Maternal Age [years (SD)]	28.2 (5.5)
Infants
Gestational Age at Birth [N=86,weeks (SD)]	39.3 (1.5)
Age at Newborn MRI Scan [N=86, weeks (SD)]	3.73 (1.7)
Age at 12-mo MRI Scan [N=32, weeks (SD)]	54.0 (3.1)
Sex (male, frequency %)	55.8
Infant Race/Ethnicity (%)
White non-Hispanic	37.5
White Hispanic	35.0
Asian	8.75
Other	18.75
Household Highest Level of Maternal Education (%)
High-School or Test Equivalent	22.1
Vocational School or Some College	41.9
Associates Degree	4.65
Bachelors or Graduate Level Degree	31.4
Gross Annual Household Income (%)
< $15,000	10.7
$15,000 – 29,999	22.6
$30,000 – 49,999	23.8
$50,000 – 100,000	35.7
> $100,000	7.1