Table 1 Population characteristics.

From: Oropharyngeal administration of mother’s own milk influences levels of salivary sIgA in preterm infants fed by gastric tube

Infant characteristics

Study group

Control group

t/χ2

p value

Gender n (%)

0.451

0.502

Male

28 (50)

31 (56)

  

Female

28 (50)

24 (44)

Gestational age at birth (eewk, M ± SE)1

29.48 ± 1.83

29.84 ± 2.19

− 0.930

0.355

Birth weight (kg, M ± SE)

1.24 ± 0.25

1.17 ± 0.21

1.611

0.110

Apgar score at 1 min (M ± SE)

8.50 ± 2.20

8.49 ± 2.28

0.021

0.983

Apgar score at 5 min (M ± SE)

9.69 ± 1.43

9.67 ± 1.32

0.090

0.928

Mode of delivery n (%)

0.015

0.901

Vaginal delivery

21 (37.5)

20 (36.4)

  

Cesarean delivery

35 (62.5)

35 (63.6)

Twins n (%)

2.022

0.155

Yes

18 (32.1)

27 (49.1)

  

No

38 (67.9)

28 (50.9)

  

Invasive mechanical ventilation

9 (16.1)

10 (18.2)

0.087

0.768

Time of start enteral feeding with MOM2 (h, M ± SE)

58.04 ± 33.97

59.78 ± 34.92

− 0.26007

0.790

Feeding for 2wk after birth

0.073

0.788

Breast milk

20 (35.7)

21 (38.2)

  

Mixed

36 (64.3)

34 (60.7)

  

Maternal characteristics

Age (year, M ± SE)

30.51 ± 4.56

32.70 ± 8.31

− 1.720

0.087

Gestational diabetes n (%)

12 (21.4)

14 (25.5)

0.251

0.617

Gestational hypertension n (%)

6 (10.7)

12 (21.8)

2.518

0.113

Placental abruption n (%)

5 (8.9)

3 (5.5)

0.501

0.479

Premature rupture of membranes n (%)

29 (51.8)

21 (38.2)

2.074

0.150

Antenatal steroid n (%)

47 (83.9)

49 (86.5)

0.633

0.426

Antenatal magnesium sulfate n (%)

15 (26.8)

12 (24.3)

0.372

0.542

  1. Values were expressed as the means (M) ± standard error (SE) or number (%). 2MOM, mother’s own milk; t, Independent samples t-test; χ2, Chi-square test.