Table 4 Uni- and multivariable logistic regression analysis of the perinatal-neonatal risks of NRF mortality

BW < 1000 (g)

9.97 (3.68, 27.0)^***

7.13 (1.70, 29.9)^**

 1000–1499

1.84 (1.16, 2.93)^*

7.21 (2.83, 18.4)^***

 1500–2499

0.43 (0.26, 0.70)^**

1.02 (0.45, 2.33)

 2500–3999

1.00 (reference)

1.00 (reference)

 ≥ 4000

0.85 (0.28, 2.59)

0.13 (0.02, 0.98)*

Born in level III hospitals

0.53 (0.37, 0.77)^***

0.44 (0.24, 0.81)^**

Cesarean delivery

0.38 (0.26, 0.55)^***

0.30 (0.17, 0.55)^***

Higher SNAPPE-II

2.43 (2.09, 2.82)^***

2.29 (1.89, 2.78)^***

Respiratory distress syndrome

1.44 (1.00, 2.07)

3.56 (1.05, 12.1)^*

Meconium aspiration syndrome

3.92 (1.30, 11.9)^*

31.5 (4.81, 206)^***

Pneumonia/sepsis (primary)

0.38 (0.24, 0.59)^***

2.72 (0.80, 9.26)

Congenital anomalies

4.50 (2.78, 7.31)^***

30.0 (7.55, 119)^***

Pulmonary hemorrhage

11.9 (5.34, 26.7)^***

3.42 (1.05, 11.1)^*

PPHN

6.74 (3.76, 11.1)^***

3.42 (1.05, 11.1)^*

Patent ductus arteriosus

2.30 (1.37, 3.89)^**

0.42 (0.16, 1.08)

Necrotizing enterocolitis

4.19 (2.72, 7.72)^***

7.96 (3.28, 19.4)^***

CPAP

0.17 (0.11, 0.25)^***

0.09 (0.04, 0.20)^***

MV

3.04 (2.08, 4.44)^***

0.43 (0.22, 0.84)^*