Table 3 Multivariable logistic analysis of association between outcomes and different exposure of ANS

Resuscitation

1

1.31(0.90,1.41)

0.91(0.58,1.40)

1.19(0.76,1.78)

Intubation in DR

1

1.35(0.92,1.86)

1.35(0.82,2.25)

1.38(0.90,1.82)

PS

1

1.09(0.87,1.36)

0.80(0.50,1.27)

1.25(0.93,1.42)

PS ≥ 2 times

1

1.26(0.91,1.76)

1.05(0.52,2.12)

1.01(0.63,1.61)

Pneumothorax

1

0.97(0.59,4.23)

3.86(0.92,19.4)

2.79(0.80,9.74)

Pulmonary hemorrhage

1

1.58(0.94,2.83)

2.76(0.98,5.59)

1.53(0.76,2.82)

3–4 NRDS

1

0.78(0.55,1.32)

0.78(0.62,1,1.83)

0.85(0.63,1.62)

BPD^a

1

0.88(0.69,1.38)

1.85(0.99,3.77)

0.92(0.83,1.79)

Death or BPD

1

0.97(0.03,1.29)

1.46(0.79,2.94)

1.38(0.89,186)

SNI

1

1.70(0.79,3.68)

-

1.56(0.54,3.72)

Death or SNI

1

1.33(0.89,1.82)

0.48(0.18,1.35)

1.68(1.29,3.80)

NEC

1

1.45(0.63,3.26)

0.97(0.43,2.00)

1.31(0.45,4.65)

Death or NEC

1

0.89(0.62,1.46)

0.56(0.29,1.75)

1.78(1.55,2.89)

ROP^b

1

0.58(0.31,1.08)

1.07(0.42,2.87)

0.68(0.43,1.79)

Death or ROP

1

0.90(0.68,1.14)

0.78(0.36,1.82)

1.51(0.80,1.92)

EUGR

1

1.56(0.99,2.02)

1.46(0.65,2.82)

0.92(0.67,1.25)

Death

1

0.93(0.57,1.50)

0.39(0.1,1.68)

1.85(1.10,3.14)