Table 1.
Basic characteristics of the study population.
| Analytic Dataset (n = 169) |
|
|---|---|
| N (%) | |
| Child’s sex | |
| Male | 87 (51.48) |
| Female | 82 (48.52) |
| Household incomea | |
| Low | 43 (25.44) |
| Medium | 56 (33.14) |
| High | 66 (39.05) |
| Missing | 4 (2.37) |
| Maternal race and ethnicity | |
| Non-Hispanic white | 92 (54.44) |
| Hispanic | 30 (17.75) |
| Otherb | 47 (27.81) |
| Maternal education | |
| High school or less | 21 (12.43) |
| Some college, Associate or technical/vocational school | 50 (29.59) |
| Bachelor’s degree | 50 (29.59) |
| Graduate or Professional degree | 47 (27.81) |
| Missing | 1 (0.59) |
| Prenatal smoking | |
| Active | 8 (4.73) |
| Passive | 2 (1.18) |
| None | 129 (76.33) |
| Missing | 30 (17.75) |
| Prenatal vitamin in month 1 of pregnancy | |
| Yes | 96 (56.80) |
| No | 72 (42.60) |
| Missing | 1 (0.59) |
| Autism diagnosis | |
| Yes | 33 (19.53) |
| No | 133 (78.70) |
| Missing | 3 (1.78) |
| Mean (SD) | |
| Maternal age, years | 33.97 (4.53) |
| Parityc | 1.79 (0.90) |
| Pre-Pregnancy BMI, kg/m2 | 27.94 (7.06) |
| Total alcohol intake, g/day | 0.12 (0.56) |
Abbreviations: BMI (Body Mass Index).
a
Low income category defined as <$50,000, medium category as $50,000-$100,000, high as >$100,000.
b
Includes individuals who identified as “Black, African American,” “American Indian/Alaskan Native,” “Asian,” “Native Hawaiian/Pacific Islander,” and “Multiple or Other Race”.
c
Parity value does not include the study child in EARLI; by design, all children in EARLI were 2nd or later birth order.