Table 4

Spearman’s correlations between adjusted very preterm mortality and rates of individual morbidities, adjusted for GA, in 16 European regions, all births <32 weeks of GA and by GA subgroups

	<28 weeks' GA		28–31 weeks' GA		Total <32 weeks' GA
	rho	P value	rho	P value	rho	P value
IVH grade III/IV	0.38	0.15	0.43	0.10	0.69	<0.01
cPVL	0.02	0.93	0.30	0.26	0.22	0.42
ROP stage 3+	0.08	0.75	−0.01	0.98	0.14	0.61
Severe NEC	−0.45	0.08	0.26	0.33	−0.27	0.31
Severe BPD	0.11	0.71	−0.47	0.09	−0.11	0.70

BPD, bronchopulmonary dysplasia; cPVL, cystic periventricular leukomalacia; GA, gestational age; IVH, intraventricular haemorrhage; NEC, necrotizing enterocolitis; ROP, retinopathy of prematurity.