Table 3.
Mean LINE-1% methylation overall and stratified by SES indicator categories and years living in the USA
| SES indicators | LINE-1% mean methylation (95% CI) |
|---|---|
| Overall | 78.9 (78.7, 79.1) |
| Maternal-level | |
| Educational attainment | |
| < 6th grade | 78.8 (78.5, 79.1) |
| 7th–12th grade | 79.2 (78.8, 79.4) |
| ≥ High school | 78.7 (78.3, 79.2) |
| Household-level | |
| Monthly income quartiles | |
| 1st quartile ($37–$225) | 78.7 (78.3, 79.2) |
| 2nd quartile ($281–$375) | 79.1 (78.8, 79.4) |
| 3rd quartile ($438–$563) | 78.8 (78.4, 79.2) |
| 4th quartile ($583–$1750) | 78.7 (78.1, 79.2) |
| Poverty income ratio quartiles | |
| 1st quartile (0.13–0.65) | 78.8 (78.4, 79.2) |
| 2nd quartile (0.71–0.98) | 79.1 (78.8, 79.5) |
| 3rd quartile (1.01–1.21) | 78.9 (78.8, 79.3) |
| 4th quartile (1.30–2.40) | 78.7 (78.2, 79.1) |
| Neighborhood (census tract)-level | |
| Median household income quartiles | |
| 1st quartile ($24,896–$31910) | 78.9 (78.6, 79.2) |
| 2nd quartile ($31,989–$34593) | 78.7 (78.2, 79.2) |
| 3rd quartile ($34,848–$40856) | 78.9 (78.5, 79.4) |
| 4th quartile ($41,354–$77272) | 79.0 (78.6, 79.4) |
| Percent below poverty quartiles | |
| 1st quartile (2.8–18.2) | 78.7 (78.3, 79.1) |
| 2nd quartile (19.0–22.3) | 79.0 (78.6, 79.4) |
| 3rd quartile (23.5–27.5) | 78.7 (78.4, 79.0) |
| 4th quartile (27.7–34.2) | 79.8 (79.1, 80.4) |
| Percent without a highschool education quartiles | |
| 1st quartile (13.7–50.1) | 78.9 (78.5, 79.3) |
| 2nd quartile (51.4–71.4) | 79.1 (78.7, 79.5) |
| 3rd quartile (72.5–75.3) | 78.6 (78.2, 79.0) |
| 4th quartile (78.7–87.0) | 78.9 (78.6, 79.3) |
| Years living in the USA (“acculturation”) | |
| < =1 year | 79.2 (78.6, 79.7) |
| 2–5 years | 79.3 (78.9, 79.8) |
| 6–10 years | 78.8 (78.4, 79.8) |
| 11–24 years | 78.8 (78.4, 79.2) |
| Entire life (18–32 years) | 78.4 (77.8, 78.9) |