Table 1.

Participant demographic and scan information

	M (SD)		Range
Gestational age, days	278.0 (7.6)		259–295
Maternal education, years	16.3 (3.0)		8–25
Birthweight, g	3470.1 (421.2)		2373–4701
	N (%)
Sex, male	110 (49.1%)
Five scans	5 (2.2%)
Four scans	27 (12.1%)
Three scans	48 (21.4%)
Two scans	56 (25.0%)
One scan	88 (39.3%)
	Neonate N = 146	1 Year N = 91	2 Years N = 62	4 Years N = 84	6 Years N = 94
	M (SD)	M (SD)	M (SD)	M (SD)	M (SD)
Age at scan (months)	0.69 (0.28)	12.67 (0.73)	24.62 (0.67)	49.17 (0.79)	73.75 (1.28)
	N (%)	N (%)	N (%)	N (%)	N (%)
Allegra, 6-direction	88 (60%)	38 (42%)	23 (37%)	9 (11%)	0 (0%)
Allegra, 42-direction	37 (25%)	32 (35%)	26 (42%)	20 (24%)	32 (34%)
Trio, 42-direction	21 (14%)	21 (23%)	13 (21%)	55 (65%)	62 (66%)

SD, standard deviation.