Table 4 Risk factors for NEC

Sex, male

0.60

0.17–2.12

0.513

 38–42 weeks (ref)

 37–37 + 6 weeks

8.87

2.41–32.63

0.002

  < 1 week (ref)

 1–2 weeks

0.61

0.12–3.06

0.717

 2–4 weeks

1.10

0.13–9.44

1.000

  ≥ 4 weeks

2.56

0.28–22.97

0.375

  ≥ 2500 g (ref)

  < 2500 g

5.14

1.25–21.12

0.042

 Full enteral (ref)

 Partial or NPO

107.67

16.43–705.38

< 0.001

 DD-pulmonary (ref)

 DD-systemic

0.44

0.09–2.14

0.489

 Parallel

0.29

0.04–2.38

0.443

Functional single ventricle

5.78

1.59–21.05

0.009

Ventilator care

4.59

1.26–16.69

0.021