Table 3.

Logistic regression of 28-day mortality

Exposure	Number of infants exposed	Mortality in exposed infants (%)	OR (95% CI) for 28-day mortality in multivariate logistic regression analysis	P value*
All infants	5380	2.4	n.a.	n.a.
Higher gestational age (per week)	5380	n.a.	0.81 (0.73 to 0.90)	<0.001
Antenatal treatment with steroids	4939	2.2	0.66 (0.38 to 1.17)	0.15
Measured lowest mean blood pressure on day 1 (per additional mm Hg)	5380	n.a.	0.96 (0.92 to 0.998)	0.038
Genetic score blood pressure >P75	1340	1.6	Ref.	Ref.
Genetic score blood pressure P25–P75	2689	2.4	1.55 (0.90 to 2.68)	0.11
Genetic score blood pressure <P25	1351	3.2	2.10 (1.18 to 3.74)	0.012
APGAR score <7 at 5 min	959	5.3	1.36 (0.89 to 2.06)	0.15
Multiple birth	1504	2.9	1.55 (1.02 to 2.35)	0.039
Birth by emergency caesarean section	571	4.0	1.34 (0.79 to 2.29)	0.28
Mechanical ventilation on the first day of life	2253	4.6	1.64 (0.97 to 2.76)	0.065
Dopamine	512	8.4	0.98 (0.62 to 1.54)	0.92
Dobutamine	595	9.9	1.83 (1.18 to 2.83)	0.007
Norepinephrine	299	12.7	1.76 (1.08 to 2.88)	0.023
Epinephrine	297	23.2	9.90 (6.47 to 15.1)	<0.001

n.a., not available.