Table 2.

Medical Characteristics

Variable	M (SD)	Range
Gestational age (weeks)	33.01 (5.26)	23.29–41.00
Birthweight (grams)	1872.91 (962.56)	555–3843
z-Score for birthweight	−1.268 (1.95)	−5.817–2.311
Length of NICU stay (days)	58.17 (44.57)	5–176
Apgar Score
1 minute	5.38 (2.63)	1–9
5 minutes	7.27 (2.10)	2–9
Variable	n (%)
Neurological issue	22 (41.5%)
Preterm status
Extremely preterm	10 (18.9%)
Very preterm	14 (26.4%)
Moderately preterm	4 (7.5%)
Late preterm	9 (17.0%)
Full term	16 (30.2%)
HRIF Primary Qualifying Condition
Preterm (<32 weeks)	24 (45.3%)
Low Birthweight (≤1500 g, ≥32 weeks)	8 (15.1%)
Major Neurological Issue (>1500 g, ≥32 weeks)	10 (18.9%)
Cardiac (No Major Neuro, >1500 g, ≥32 weeks)	6 (11.3%)
Other (No Major Neuro/Cardiac, >1500 g, ≥32 weeks)	5 (9.4%)

Note. Apgar scores missing for one participant. Neurological issues included intraventricular hemorrhage (n=8), hypoxic-ischemic encephalopathy (n=8), seizures (n=5), germinal matrix hemorrhage (n=3), meningitis (n=2), and agenesis of the corpus collosum (n=1). Infants were placed into only one HRIF group based on priority order above (e.g., 31-week infant who weighed 1300 g placed in preterm group). “Other” group comprised of infants who had severe respiratory issues, pulmonary hypertension, hernia, necrotizing enterocolitis, sepsis, and severe hypoglycemia. One infant in preterm group and three in cardiac group had a genetic diagnosis of Trisomy 21.