TABLE A3.
Demographic information for the subsample of infants included in the qT1 template creation
| Demographic variable | Statistic |
|---|---|
| Infant age at scan, mean ± SD weeks | 6.76 ± 0.68 |
| Infant race, number (percent) | |
| White/Caucasian American | 19 (65.5) |
| Asian American | 6 (20.7) |
| Black/African American | 3 (10.3) |
| Native Hawaiian/Pacific Islander | 0 (0.0) |
| American Indian or Alaska Native | 0 (0.0) |
| Other/biracial | 1 (3.4) |
| Infant ethnicity, number (percent) | |
| Hispanic or Latinx | 7 (24.1) |
| Not Hispanic or Latinx | 21 (72.4) |
| Not provided | 1 (3.4) |
| Annual household income, number (percent) | |
| Less than $5,000 | 0 (0.0) |
| $5,001–15,000 | 0 (0.0) |
| $15,001–30,000 | 2 (6.9) |
| $30,001–60,000 | 4 (13.8) |
| $60,001–90,000 | 2 (6.9) |
| $90,001–150,000 | 11 (37.9) |
| More than $150,000 | 10 (34.5) |
| Decline to state | 0 (0.0) |
| Infant sex, N male (percent) | 17 (58.6) |
| Breastfed, number (percent) | |
| Yes | 25 (86.2) |
| No | 3 (10.3) |
| Not provided | 1 (3.4) |
| Mother age, mean ± SD years | 32.96 ± 4.92 |
| Maternal race, number (percent) | |
| White/Caucasian American | 18 (62.1) |
| Asian American | 7 (24.1) |
| Black/African American | 1 (3.4) |
| Native Hawaiian/Pacific Islander | 0 (0.0) |
| American Indian or Alaska Native | 0 (0.0) |
| Other/biracial | 3 (10.3) |
| Maternal ethnicity, number (percent) | |
| Hispanic or Latinx | 6 (20.7) |
| Not Hispanic or Latinx | 23 (79.3) |
| Not provided | 0 (0.0) |
| Maternal education, number (percent) | |
| Some high school | 0 (0.0) |
| High school diploma/GED | 0 (0.0) |
| Some college | 0 (0.0) |
| Associate’s degree | 2 (6.9) |
| Trade/technical school | 2 (6.9) |
| Bachelor’s degree | 11 (37.9) |
| Graduate degree | 14 (48.3) |