. Author manuscript; available in PMC: 2023 Mar 10.

Published in final edited form as: Pediatr Res. 2022 Jun 20;93(3):701–707. doi: 10.1038/s41390-022-02160-2

Table 3:

Serum iron markers of iron status among PENUT Trial patients with and without BPD at 36 weeks PMA.

	BPD (n=332)	No BPD (n=489)	p-value
14-day ferritin (median, IQR)	227 (105, 382)^a	191 (91, 348)^b	0.11
42-day ferritin (median, IQR)	154 (61, 341)^c	129 (56, 265)^d	0.23

n=254;

n=392;

n=87;

n=144

Measurements recorded if taken at 14 ± 3 days and 42 ± 3 days. For infants with multiple measurements within a given window, the mean was utilized.

The measurements were log transformed, using a generalized estimating equations model adjusting for site, gestational age, and erythropoietin exposure to provide a p-value.