Table 1 Demographic characteristics and hypoxic test results of the study population.

Variables	All infants (n = 47)	nCLD infants (n = 32)	Infants without nCLD (n = 15)
PMA at time of HCT (weeks)
Median (10–90th centiles)	46 (36.8–113.6)	64.5 (38.0–144.6)	37.0 (34.6–42.4)
Range	34–228	38–228	34–43
Corrected age at time of HCT (months)
Median (10–90th centiles)	1.4 (−0.7–17.0)	5.7 (−0.5–24.1)	−0.7 (−1.2–0.6)
Range	−1.4–43.4	−0.5–43.4	−1.4–0.7
Body weight at time of HCT (kg)
Median (10–90th centiles)	4.6 (2.2–10.1)	6.2 (2.6–10.5)	2.2 (2.0–3.9)
Range	1.9–14.2	2.6–14.2	1.9–4.6
Gestational age (weeks)
Median (10–90th centiles)	27.0 (24.0–30.2)	26.0 (23.3–29.7)	28.0 (25.0–34.8)
Range	23–36	23–31	25–36
Birth weight (kg)
Median (10–90th centiles)	0.9 (0.6–1.6)	0.9 (0.6–1.4)	1.0 (0.7–3.1)
Range	0.5–4.5	0.5–2.0	0.7–4.5
Sex (boys:girls)	25:22	19:13	6:9
Spo2 at room air (%)
Median (10–90th centiles)	98 (96–100)	98 (96–100)	98 (97–100)
Range	95–100	95–100	97–100
Hypoxia test (pass:fail)	9:38	9:23	0:15
Supplemental oxygen (ml/min)
Median (10–90th centiles)	250 (125–500)
Range	16–500

PMA, postmenstrual age; HCT, hypoxic challenge test; Spo₂, pulse oxygen saturation.