Table 1 Demographics of infants with initial and delayed thyroid-stimulating hormone elevations and control

Gestational age (weeks)

26.0 ± 1.2

25.0 ± 1.5^*

26.8 ± 1.9

(25^+ 0–28^+ 6)

(23^+ 0–28^+ 3)

(24⁺ 0–34^+ 4)

Birth weight (g)

789 ± 88

692 ± 142^*

839 ± 120

(648–884)

(470–990)

(380–999)

Male sex

3 (60)

15 (35)

108 (43)

One-minute Apgar score

3.0 ± 1.4

4.3 ± 1.7

4.8 ± 1.7

Five-minute Apgar score

5.6 ± 1.5^{*, †}

7.2 ± 1.2

7.2 ± 1.4

Delivery type C/sec

5 (100)

32 (76)

206 (82)

Small for gestational age

1 (20)

10 (24)

66 (26)

Antenatal steroids

1 (20)^{*, †}

36 (86)

200 (80)

Pathologic chorioamnionitis

1 (20)

13 (31)

116 (46)

Pregnancy-induced hypertension

3 (60)

7 (17)

62 (25)

Gestational diabetes mellitus

0 (0)

1 (2)

9 (4)