Table 4 Multivariable analysis of predictors of mortality

Year of admission:

 2014

Reference

 2015

1.00 (0.73 to 1.36)

 2016

0.86 (0.63 to 1.16)

 2017

0.71 (0.52 to 0.97)

Age at admission, days

0.95 (0.93 to 0.97)

Sex:

 Female

Reference

 Male

1.05 (0.86 to 1.28)

Birth weight:

 Normal weight (≥2500 g)

Reference

 Low birth weight (1500–2499 g)

2.48 (2.00 to 3.09)

 Very low birth weight (1000–1499 g)

11.71 (8.63 to 15.94)

 Extremely low birth weight (< 1000 g)

76.04 (28.54 to 263.82)

Birthplace:

 Inborn

Reference

 Outborn

1.64 (1.31 to 2.06)

Early-onset sepsis:

 No

Reference

 Yes

0.99 (0.75 to 1.31)

Late-onset sepsis:

 No

Reference

 Yes

1.63 (1.12 to 2.36)

Intrapartum-related complications:

 No

Reference

 Yes

4.69 (3.55 to 6.20)

Meconium aspiration syndrome:

 No

Reference

 Yes

2.34 (1.15 to 4.43)

Respiratory distress:

 No

Reference

 Yes

2.25 (1.72 to 2.95)

Transient tachypnea of the newborn:

 No

Reference

 Yes

0.62 (0.25 to 1.33)

Other infections:

 No

Reference

 Yes

1.93 (1.31 to 2.81)

Malformations:

 No

Reference

 Yes

2.32 (1.49 to 3.57)