Table 1. Demographic Data for infants.

	Preterm		full-term		t-value	p-value
	average	range	average	range
GA (weeks)	31.8	23.1–36.7	39.1	37–41.3	−9.8	<10−12
CA at scan (days)	52.2	4–129	4.7	2–8	7.7	<10−9
PMA at scan (weeks)	39.3	37.1–42.1	39.8	37.5–42.1	−1.4	0.16
head circumference (cm)	33.9	30.1–37.1	33.3	31.1–37	1.3	0.20
time window for analysis (s)	233.4	150.1–380.3	204.2	150.1–310.3	1.8	0.07

GA: gestational age, CA: chronological age, and PMA: postmenstrual age.