Table 1 Basic characteristics of the EARLI analytic sample (n = 101)
From: Placental morphology in association with autism-related traits in the EARLI study
Maternal characteristics | Mean (SD) or n(%)a |
|---|---|
Maternal Age (years) | 34.6 (4.18) |
Maternal Race/Ethnicity | |
 Non-Hispanic White | 62 (61.4%) |
 Hispanic | 10 (9.9%) |
 Non-Hispanic Black | 15 (14.9%) |
 Non-Hispanic Asian | 10 (9.9%) |
 Other | 3 (3.0%) |
 Missing | 1 (1.0%) |
Maternal Education Level | |
 Some college or below | 33 (32.7%) |
 College degree | 31 (30.7%) |
 Graduate School or above | 35 (34.7%) |
 Missing | 2 (2.0%) |
Maternal Birthplace | |
 US | 84 (83.2%) |
 Outside U.S. | 16 (15.8%) |
 Missing | 1 (1.0%) |
 Maternal Pre-pregnancy BMI | 27.1 (6.67) |
Household Income | |
 Less than $50,000 | 25 (24.8%) |
 $50,000 to $99,999 | 26 (25.7%) |
 $100,000 or more | 47 (46.5%) |
 Missing | 3 (3.0%) |
Child characteristics | Mean (SD) or n(%)a |
Child Sex | |
 Female | 46 (45.5%) |
 Male | 55 (54.5%) |
Child Birthweight | |
 Low birthweight (< 2500 g) | 4 (4.0%) |
 Normal birthweight | 96 (95.0%) |
 Missing | 1 (1.0%) |
Gestational Age (weeks) | 39.4 (1.32) |
Delivery Mode | |
 Vaginal Birth | 61 (60.4%) |
 C-section | 38 (37.6%) |
 Missing | 2 (2.0%) |
 SRS Total Raw Score at 36mos | 32.9 (27.1) |
MSEL ELC Score at 36mos | 99.2 (20.7) |
ASD Diagnosis at 36mos | |
 No ASD | 80 (79.2%) |
 ASD | 20 (19.8%) |
 Missing | 1 (1.0%) |