Table 3:

Associations between perinatal variables and postnatal brain growth

Perinatal Variable	Adjusted^{^a} Growth (mm/week PNA)		Interaction Term^{^b} (P Value)
Perinatal Variable	β	95% CI	Interaction Term^{^b} (P Value)
Biparietal diameter
GA
<28 weeks	1.88	1.71–2.05	.002
≥28 weeks	1.29	0.96–1.62	.002
Corpus callosum length
BW z score
≥−2 SD	0.91	0.84–0.98	.045
<−2 SD	0.73	0.57–0.89	.045
Postnatal corticosteroids
No	0.92	0.85–1.00	.046
Yes	0.77	0.63–0.90	.046
Bronchopulmonary dysplasia
No	0.98	0.88–1.07	.01
Yes	0.81	0.73–0.89	.01
Transcerebellar diameter
Antenatal corticosteroids
No	2.26	1.81–2.70	.023
Yes	1.73	1.63–1.83	.023
Postnatal corticosteroids
No	1.84	1.74–1.95	<.001
Yes	1.41	1.22–1.61	<.001
Bronchopulmonary dysplasia
No	1.89	1.75–2.02	.008
Yes	1.63	1.49–1.76	.008
Sepsis/NEC
No	1.82	1.71–1.93	.016
Yes	1.55	1.36–1.74	.016
Vermis height
Postnatal corticosteroids
No	0.63	0.58–0.69	.011
Yes	0.49	0.39–0.59	.011
Ventricular width
GA
<28 weeks	0.64	0.57–0.71	.004
≥28 weeks	0.41	0.27–0.55	.004

↵a Adjusted for gestational age, birth weight z score, and sex.
↵b P value for the interaction between the perinatal variable and postnatal age.