Table 1 Demographics of 202 pregnant women who underwent 274 prenatal MRI studies.

Number of subjects

202

137

65

 Female fetus

91 [48]

58 [45]

33 [54]

0.22

 Male fetus

100 [52]

72 [55]

28 [46]

 With 1 scan

130 [64]

92 [67]

38 [58]

0.23

 With 2 scans

72 [36]

45 [33]

27 [42]

Number of MR scans

274

182

92

 Time point 1

147 [54]

101 [55]

46 [50]

0.39

 Time point 2

127 [46]

81 [45]

46 [50]

GA at MRI

30.4

30.2

30.8

0.15

[26.1, 35.3]

[27.0, 35.9]

[25.3, 34.1]

Maternal age (years)^*

34.1

34.0

34.6

0.63

[31.0, 36.9]

[31.0, 37.8]

[30.5, 36.1]

Maternal parity (primiparous/multiparous)^†

109/80

73/55

36/25

0.80

GA at birth (weeks)^‡

39.6

39.7

39.4

0.51

[38.7, 40.4]

[38.4, 40.6]

[38.9, 40.1]

Birth weight (kg)^§

3355

3382

3285

0.91

[3078, 3677]

[3079, 3670]

[3064, 3690]

Birth head circumference (cm)^#

34.3

34.0

34.5

0.19

[33.5, 35.5]

[33.0, 35.0]

[33.7, 35.6]

Apgar score at 1 min^††

8

8

8

0.66

[8, 9]

[8, 9]

[8, 9]

Apgar score at 5 min^‡‡

9

9

9

0.32

[9, 9]

[9, 9]

[9, 9]

Delivery Mode^§§

0.10

 Vaginal

101 [68]

59 [62]

42 [78]

 Elective C-section

26 [17]

18 [19]

8 [15]

 Emergency C-section

22 [15]

18 [19]

4 [7]

Race/Ethnicity^##

0.07

 White

100 [57]

68 [56]

32 [58]

 Black

33 [19]

25 [21]

8 [15]

 Hispanic or Latino

20 [11]

12 [10]

8 [15]

 Asian or Pacific Islander

10 [6]

4 [3]

6 [11]

 Others

13 [7]

12 [10]

1 [2]