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Table 1 Patients’ demographic and clinical characteristics

From: Lung recruitment improves the efficacy of intubation-surfactant-extubation treatment for respiratory distress syndrome in preterm neonates, a randomized controlled trial

 

lung recruitment group

(n = 92)

Control group

(n = 92)

t/χ2

P

Gestational age, mean (SD), wk

29.75 ± 1.86

29.69 ± 1.66

0.218

0.828

Birth weight, mean (SD), kg

1.32 ± 0.28

1.29 ± 0.25

0.719

0.473

Gender,boy, n(%)

55 (60)

60 (65)

0.580

0.446

Cesarean section, n(%)

56 (61)

65 (71)

1.955

0.162

Mothers’ characteristics

 Mother’s age, mean (SD), year

29.74 ± 5.19

30.71 ± 5.27

1.254

0.211

 Antenatal steroids, n(%)

54 (59)

48 (52)

0.792

0.374

  gestational diabetes mellitus, n(%)

8 (9)

22 (24)

7.806

0.005

  amniotic fluid pollution, n(%)

7 (8)

10 (11)

0.583

0.445

  intrauterine infection, n(%)

29 (32)

34 (37)

0.603

0.437

 Hypertension disorders, n(%)

21 (23)

19 (21)

0.128

0.721

  premature rupture of membranes, n(%)

16 (17)

20 (22)

0.553

0.457

 Asphyxia, n(%)

18 (20)

15 (16)

0.332

0.564

 Apgar,1 min,median (minimum,maximum)

9 (3,10)

10 (2,10)

0.703

0.483

 Apgar,5 min,median (minimum,maximum)

10 (7,10)

10 (6,10)

0.560

0.576

 Apgar,10 min,median (minimum,maximum)

10 (8,10)

10 (7,10)

0.379

0.705