Table 1.

Summary Statistics of Participants and Associations with MEG3 Methylation

	Sample		MEG3 Methylation
	N	%	Mean	SD	Min	Max
Relationship Status
Never Married	136	27.8	73.4	5.3	56.6	85.3***
Cohabiting	133	27.2	72.7	5.6	57.1	85.0
Married	189	38.7	70.9	5.3	56.0	84.3
Other	31	6.3	74.5	6.2	60.2	82.5
Mother’s Mother Present
Yes	61	12.5	72.0	5.9	57.1	85.2
No	428	87.5	72.3	5.5	56.0	85.3
Mother’s Race
White	240	49.1	71.7	5.6	56.0	85.0+
Black	193	39.5	73.1	5.4	56.6	85.3
Asian	10	2.0	73.3	4.7	64.5	79.3
Other	36	7.4	71.9	5.2	62.1	85.2
Mother’s Hispanic Origin
Hispanic	139	28.4	73.3	5.3	61.0	85.2*
Non-Hispanic	350	71.6	71.9	5.6	56.0	85.3
Mother’s Household Income
$0–24.9K	198	40.5	72.8	5.2	57.1	85.3***
$25–49.9K	56	11.5	70.8	6.3	56.0	82.2
≥$50K	129	26.4	71.2	5.3	57.9	84.3
Missing	106	21.7	73.6	5.6	56.6	85.2
Mother Smoked During Pregnancy?
Yes	77	15.8	73.3	0.6	72.1	74.5+
No	412	84.3	72.1	5.6	56.0	85.2
Antibiotics Used During Pregnancy?
Yes	123	25.2	72.1	5.5	56.6	85.3
No	366	74.8	72.4	5.6	56.0	85.2
Mother’s Pre-Pregnancy BMI
Underweight	13	2.7	69.9	6.0	56.0	78.2
Normal	168	34.4	72.1	5.7	57.9	85.3
Overweight	227	46.4	72.2	5.5	56.6	85.0
Missing	81	16.6	73.4	5.4	61.1	85.2
Newborn Sex
Female	244	49.9	72.8	5.3	57.9	85.3
Male	245	50.1	71.8	5.7	56.0	85.0

	Mean	SD
% MEG3 Methylated	72.3	0.3
Mother’s Years of Education	12.9	0.2
Tract Disadvantage (Std. to National Mean)	0.550	0.051

^***p<0.001;

^**p<0.01;

^*p<0.05;

⁺p<0.1;

Newborn Epigenetic Study, 2010–2011 (N=489)