Table 1 Summary statistics of participating infants and mothers, CHAMACOS (n = 241 mother-infant dyads)
From: DNA methylation and socioeconomic status in a Mexican-American birth cohort
| Â | All |
|---|---|
Infant | |
Preterm birth, N (%) | |
 Yes | 13 (5.4) |
 No | 228 (94.6) |
Low birth weight, N (%) | |
 Yes | 7 (2.9) |
 No | 234 (97.1) |
Mother | |
 Age at pregnancy, years (M ± SD) | 25.8 ± 5.3 |
 Pre-pregnancy body mass index, kg/m2 (M ± SD) | 26.5 ± 5.0 |
Race/ethnicity, N (%) | |
 Latino | 232 (96.2) |
 White | 5 (2.1) |
 Other | 4 (1.7) |
Educational attainment, N (%) | |
 < 6th grade | 98 (40.7) |
 7–12 grade | 92 (38.2) |
 ≥ High school | 51 (21.1) |
Country of birth, N (%) | |
 U.S. | 32 (13.3) |
 Mexico | 205 (85.1) |
 Central America/other | 4 (1.7) |
Years spent living in the U.S., N (%) | |
 < =1 year | 61 (25.3) |
 2–5 years | 70 (29.0) |
 6–10 years | 48 (19.9) |
 11–24 years | 34 (14.1) |
 Entire life (18–32 years) | 28 (11.6) |
Diet quality index during pregnancy (M ± SD) | 44.90 ± 9.66 |
Urinary MBzPa, μg/L (IQRb) | 9.5 (4.7, 17.8) |