Table 2 DNA methylation at IGF2 DMR and H19 DMR sites by socio-demographic characteristics

Total:

47.45 (6.89)

60.09 (7.89)

Maternal age:

< 30

47.43 (7.29)

+0.05 (0.95)

60.01 (7.44)

+0.18 (0.81)

≥30

47.48 (6.40)

60.19 (8.42)

Marital status:

living with partner

47.10 (6.59)

+0.97 (0.20)

59.48 (7.59)

+1.63 (0.05)

single

48.07 (7.37)

61.11 (8.30)

Race¹:

African American

47.62 (7.96)

-0.52 (0.49)

61.00 (7.90)

-1.80 (0.03)

Caucasian

47.10 (5.60)

59.20 (7.60)

College graduate:

no

47.72 (7.04)

-0.73 (0.34)

60.73 (8.07)

-1.83 (0.03)

yes

46.99 (6.61)

58.90 (7.45)

Antidepressant use:

no

47.44 (7.06)

+0.17 (0.85)

60.12 (7.63)

-0.25 (0.87)

yes

47.61 (5.07)

59.87 (9.98)

Depression:

no

47.21 (6.65)

+1.52 (0.13)

60.18 (8.00)

-0.07 (0.95)

yes

48.74 (8.00)

60.11 (7.64)

BMI:

≤ 30

47.81 (7.10)

-0.71 (0.41)

59.51 (7.33)

+1.81 (0.07)

> 30

47.10 (7.01)

61.32 (9.02)

Smoking 1 year

non-smoker

47.69 (7.15)

-0.94 (0.24)

60.24 (7.90)

-0.53 (0.54)

before pregnancy:

smoker

46.75 (6.25)

59.71 (7.00)

Smoking during

non-smoker

46.82 (5.84)

+3.05 (0.01)

60.07 (7.83)

+0.14 (0.88)

pregnancy:

smoker

49.87 (9.62)

60.22 (8.22)

Birth weight:

< 2500 g

47.57 (8.24)

-0.14 (0.91)

58.96 (5.32)

+1.34 (0.15)

≥2500 g

47.43 (6.67)

60.30 (7.58)

Gender of newborn:

male

47.05 (5.86)

+0.80 (0.28)

59.67 (7.93)

+0.85 (0.28)

female

47.85 (6.63)

60.52 (7.95)