Table 4 Logistic regression model for the multivariable analysis of the outcome dead yes/no

Group

Control

0

1

0.33

Antibiotic

-0.08

0.92 (0.78–1.09)

Experimental

0.04

1.04 (0.88–1.23)

Sex

Male

0

1

 < 0.001

Female

-0.27

0.76 (0.66–0.87)

IUGR

Normal

0

1

 < 0.001

Mild

0.54

1.7 (1.34–2.18)

Severe

3.80

44.76 (6.03–332.06)

Weight quartile

Fourth > 1.6 kg

0

1

 < 0.001

Third 1.36–1.59 kg

0.29

1.33 (1.05–1.68)

Second 1.11–1.35 kg

0.75

2.13 (1.73–2.61)

First < 1.11 kg

1.60

4.96 (3.94–6.24)

Cross fostering

No

0

1

0.004

Yes

0.23

1.26 (1.07–1.46)

Random effect

Variance

Standard deviation

Week batch

0.01379

0.1174