Table 2 Distributions of maternal and fetal participant and sample characteristics for those with placenta DNA methylation measures, split by maternal use of prenatal vitamins in month 1 of pregnancy

21 (56.8%)

10 (30.3%)

0.05

17 (48.6%)

19 (35.8%)

0.33

16 (43.2%)

23 (69.7%)

18 (51.4%)

34 (64.2%)

35.3 (5.16)

35.1 (5.86)

0.89

33.8 (4.46)

33.5 (4.75)

0.77

29.0 (8.21)

26.4 (5.86)

0.12

26.8 (5.90)

27.9 (8.20)

0.47

16 (43.2%)

8 (24.2%)

0.11

16 (45.7%)

25 (47.2%)

0.34

14 (37.8%)

12 (36.4%)

5 (14.3%)

11 (20.8%)

7 (18.9%)

13 (39.4%)

14 (40.0%)

17 (32.1%)

17 (45.9%)

7 (21.2%)

0.05

18 (51.4%)

17 (32.1%)

0.11

20 (54.1%)

26 (78.8%)

17 (48.6%)

36 (67.9%)

39.4 (1.14)

39.2 (0.83)

0.49

39.1 (1.59)

39.4 (1.22)

0.39

14.0 (7.55)

15.2 (6.14)

0.47

13.0 (6.04)

14.4 (5.13)

0.27

9.06 (6.41)

10.0 (6.26)

0.52

10.3 (3.75)

9.47 (3.51)

0.31

4.71 (2.22)

4.24 (2.22)

0.37

2.73 (1.45)

2.77 (1.54)

0.89

5.43 (2.22)

7.25 (3.68)

0.02

5.57 (2.45)

6.05 (2.63)

0.38

0.80 (1.05)

0.55 (1.02)

0.32

1.24 (1.00)

1.46 (2.11)

0.51

66.0 (12.6)

62.8 (9.74)

0.23

67.1 (9.18)

65.9 (8.63)

0.51

53.3 (1.09)

52.8 (1.12)

0.05

45.0 (1.04)

44.5 (1.15)

0.03

65.3 (1.41)

64.7 (1.49)

0.06

62.1 (1.17)

61.6 (1.48)

0.09

69.2 (1.26)

68.5 (1.50)

0.06

68.4 (1.29)

67.8 (1.61)

0.11

45.5 (1.12)

45.0 (1.09)

0.06

42.7 (1.17)

42.1 (1.14)

0.02

18.7 (0.69)

18.6 (0.70)

0.64

20.1 (1.00)

19.6 (0.92)

0.02

–

–

–

32 (91.4%)

46 (86.8%)

0.73

3 (8.57%)

7 (13.2%)