Table 1 Clinical and maternal characteristics of preterm infants.

From: Predicting 2-year neurodevelopmental outcomes in preterm infants using multimodal structural brain magnetic resonance imaging with local connectivity

 

Preterm (n = 193)

EP (n = 62)

V-LP (n = 131)

p-value (EP vs. V-LP)

Demographics and maternal characteristics

 Gestational age, mean (SD)

29.87 (3.55)

25.65 (1.4)

31.23 (2.74)

< 0.001

 Postmenstrual age, mean (SD)

37.8 (2.16)

38.34 (2)

37.56 (2.38)

< 0.027

 Birth weight (g), mean (SD)

1355 (594)

872 (195)

1583 (583)

< 0.001

 Small for gestational age, n (%)

28 (15)

9 (15)

19 (14)

1

 Male sex, n (%)

85 (44)

28 (45)

57 (44)

0.952

Maternal age, mean (SD)

33.69 (4.13)

33.75 (4.81)

33.66 (3.77)

< 0.896

 Maternal education, n (%)

  < 6 years

2 (1)

1 (1.6)

1 (1)

1

  < 12 years

37 (19)

13 (21)

24 (18)

0.07

  < 16 years

123 (64)

45 (73)

78 (60)

0.003

  > 16 years

8 (4)

1 (1.6)

7 (5.3)

0.034

  Unknown or not reported

23 (12)

2 (3.2)

21 (16)

N/A

Clinical characteristics

 5 Apgar, mean (SD)

5.1 (1.81)

6.79 (1.63)

6.23 (1.62)

< 0.001

 IVH, n (%)

52 (27)

21 (34)

31 (24)

0.187

  < IVH grade II, n (%)

7 (13)

4 (19)

3 (18)

0.302

 BPD, n (%)

106 (55)

59 (95)

47 (36)

< 0.001

  BPD moderate/severe, n (%)

10 (9)

8 (14)

2 (4)

0.003

Follow-up characteristics

 Mean (SD) BSID-III Scores

   

  Cognitive

99.77 (14.43)

93.92 (13.91)

102.53 (13.83)

< 0.001

  Language

93.35 (13.08)

86.82 (13.08)

94.96 (12.23)

< 0.001

  Motor

100.6 (15.51)

95 (13.64)

103.25 (15.63)

< 0.001

  1. Data are presented as the mean ± SD or number (%). EP, extremely preterm; V-LP, very-to-late preterm; SD, standard deviation; N/A, not applicable; IVH, interventricular hemorrhage; BPD, bronchopulmonary dysplasia; BSID-III, Bayley Scales of Infant and Toddler Development, Third Edition.
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