Table 2 Crude and adjusted odds ratio (OR) and 95% confidence intervals (95% CI) for nevborns with and without symptoms of LO-BSI (late onset bloodstream infections), who survived to the third day and/or later (2009–2011)

Gestational age <28 week

3.9

2.99-5.13

71.808

71.57-72.05

Birth weight < 750 grams

2.362

1.60-3.48

3.732

3.45-4.01

Chorioamnionitis

1.404

0.80-2.45

1.185

0.96-1.42

PROM

1.079

0.78-1.48

3.343

2.97-3.72

CVC

1.293

0.93-1.79

2.886

2.49-3.27

PVC

2.803

2.06-3.81

1.523

1.14-1.91

Mechanical ventilation

2.645

1.97-3.56

12.642

12.31-12.98

CPAP

2.514

1.83-3.44

2.927

2.62-3.24

Total parenteral nutrition

1.813

1.25-2.64

2.912

2.72-3.11

Surgical procedures

1.882

1.28-2.77

2.912

2.72-3.11