Table 1 General patient demographics in 114 neonates with NEC

Gender (n/%)^a

 Male

53 (46.5)

20 (43.5)

33 (48.5)

 Female

61 (53.5)

26 (56.5)

35 (51.5)

Gestational age

(weeks, n/%) ^a

  < 28

7 (6.1)

5 (10.9)

2 (2.9)

 28 ~  < 32

29 (25.4)

14 (30.4)

15 (22.2)

 32 ~  < 34

24 (21.1)

5 (10.9)

19 (27.9)

 34 ~  < 37

39 (34.2)

16 (34.8)

23 (33.8)

  ≥ 37

15 (13.2)

6 (13.0)

9 (13.2)

Birth weight

(grams, n/%) ^a

  < 1000

12 (10.5)

8 (17.4)

4 (5.9)

 1000 ~  < 1500

25 (21.9)

12 (26.1)

13 (19.1)

 1500 ~  < 2500

58 (50.9)

19 (41.3)

39 (57.4)

  ≥ 2500

19 (16.7)

7 (15.2)

12 (17.6)

Pregnancy (n/%)^a

 Single

87 (76.3)

32 (69.4)

55 (80.9)

 Multiple

27 (23.7)

14 (30.4)

13 (19.1)

Apgar at 5 min^b

7.6 ± 1.3

7.8 ± 1.2

7.5 ± 1.3

Postmenstrual age at NEC diagnosis (days, n/%) ^a

  ≤ 7

14 (12.3)

8 (17.4)

6 (8.8)

  > 7 ~ 14

57 (50.0)

20 (43.5)

37 (54.4)

  > 14

43 (37.7)

18 (39.1)

25 (36.8)

Blood transfusion (n/%)

 Yes

35 (30.7)

18 (39.1)

17 (25.0)

 No

79 (69.3)

28 (60.9)

51 (75.0)

 Maternal age^b

29.7 ± 4.6

30.1 ± 4.5

29.4 ± 4.6

Vaginal delivery (n/%)

 Yes

45 (39.5)

17 (37.0)

28 (41.2)

 No

69 (60.5)

29 (63.0)

40 (58.8)