Table 3 Analysis of association between SGA twin newborns and neonatal outcomes based on twin birthweight reference

Neonatal unit admission

2153 (38.4)

354 (79.9)

3.68 (3.13–4.34)

< 0.001

7.72 (6.01–9.91)

< 0.001

Neonatal jaundice

1554 (27.7)

264 (59.6)

2.58 (2.20–3.03)

< 0.001

4.09 (3.30–5.09)

< 0.001

NRDS

475 (8.5)

58 (13.1)

1.05 (0.85–1.30)

0.674

1.25 (0.90–1.75)

0.187

Neonatal asphyxia

128 (2.3)

14 (3.2)

1.24 (0.75–2.07)

0.397

1.22 (0.69–2.13)

0.498

Ventilator support

410 (7.3)

51 (11.5)

1.35 (1.05–1.75)

0.021

1.94 (1.32–2.85)

0.001

HIE

15 (0.3)

3 (0.7)

2.54 (0.73–8.82)

0.141

2.06 (0.57–7.36)

0.268

ICH

21 (0.4)

4 (0.9)

2.50 (0.86–7.22)

0.091

2.05 (0.68–6.13)

0.201

Sepsis

60 (1.1)

8 (1.8)

1.60 (0.75–3.41)

0.219

1.54 (0.71–3.31)

0.273

BPD

54 (1.0)

10 (2.3)

2.33 (1.20–4.52)

0.013

2.61 (1.18–5.78)

0.018

Neonatal death

19 (0.3)

5 (1.1)

3.00 (1.08–8.28)

0.034

2.34 (0.82–6.71)

0.113

Severe composite outcome

113 (2.0)

16 (3.6)

1.74 (1.04–2.91)

0.035

1.93 (1.07–3.47)

0.028