Table 3.

Rates of hospital readmission or death among infants discharged home, up to their first birthday, for conditions and procedures indicative of neonatal morbidity

E-NAOI component	Any hospital readmission in first year (%)	Overnight hospital readmission in first year (%)	Death in first year (%)
All infants not identified by E-NAOI (n=457 939)	23.16	7.09	0.05
All infants identified by E-NAOI (n=26 068)	36.80	15.69	0.81
Term infants not identified by E-NAOI (n=436 477)	22.65	6.79	0.05
Term infants identified by E-NAOI (n=13 978)	30.17	11.59	0.92
Individual E-NAOI components*
Birth weight <1500 g	55.41	28.30	0.87
Gestational age <32 weeks	54.54	27.22	0.78
Respiratory distress syndrome	42.01	18.14	0.56
Seizure	47.60	19.80	2.33
Intraventricular haemorrhage (grades 3 and 4)	65.22	30.43	1.45
Cerebral infarction	46.97	12.12	N/A
Periventricular leukomalacia	64.91	28.07	N/A
Birth trauma (intracranial haemorrhage paralysis due to brachial plexus injury, skull or long bone fracture)	29.62	11.41	N/A
Hypoxic ischaemic encephalopathy	38.63	14.51	1.60
Necrotising enterocolitis	66.86	39.21	1.54
Sepsis/septicaemia (Streptococcus, Staphylococcus, Escherichia coli, unspecified Gram negative)	45.82	22.81	1.02
Pneumonia	39.44	17.40	1.00
Other respiratory (primary atelectasis and respiratory failure)	42.41	18.15	0.74
Chronic respiratory disease originating in the perinatal period	68.14	38.34	1.89
Bacterial meningitis	36.80	15.24	0.74
Resuscitation	41.84	19.73	1.01
Ventilatory support (mechanical ventilation and/or CPAP)	38.63	16.79	0.57
Central venous or arterial catheter	51.74	26.14	1.27
Pneumothorax requiring intercostal catheter	39.67	17.70	0.61
Any intravenous fluids	26.66	10.46	0.17
Any body cavity surgical procedure	63.48	40.14	1.63
Therapeutic hypothermia	36.40	13.70	1.50

* See online supplementary table S1 for overall incidence.

CPAP, continuous positive airway pressure; E-NAOI, English-version neonatal adverse outcome indicator.