Associations of severe adverse perinatal outcomes among continuous birth weight percentiles on different birth weight charts: a secondary analysis of a cluster randomized trial

Table 2 Severe adverse perinatal (composite) outcomes^a

Severe adverse perinatal outcome	N (%)
Perinatal death	24 (0.19)
Apgar score < 4 at 5 min	41 (0.32)
Impaired consciousness	16 (0.12)
Asphyxia	144 (1.11)
Seizures on two or more occasions	12 (0.09)
Assisted ventilation for more than 24 h	44 (0.34)
Septicemia	11 (0.08)
Meningitis	3 (0.02)
Bronchopulmonary dysplasia	1 (0.01)
Intraventricular hemorrhage grade three or four	1 (0.01)
Cystic periventricular leukomalacia	0 (0.00)
Necrotizing enterocolitis	2 (0.02)
Composite of severe adverse perinatal outcomes	215 (1.66)

^aThe primary dichotomous clinical outcome, i.e., severe adverse perinatal outcome, was a composite measure comprising one or more of the 12 severe adverse perinatal outcomes up to 7 days after birth

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