Table 1.

Participant information.

	HRA				LRC
	3 months (n = 17)	6 months (n = 12)	9 months (n = 8)	12 months (n = 6)	3 months (n = 13)	6 months (n = 18)	9 months (n = 21)	12 months (n = 21)
Age [days]	106 (11)	217 (15)	296 (17)	396 (13)	110 (12)	207 (17)	297 (17)	388 (13)
	91–121	193–242	272–329	382–416	94–135	186–241	276–336	364–422
Sex [males; females]	10; 7	5; 7	3; 5	2; 4	7; 6	8; 10	10; 11	11; 10
MSEL ELCS	n/a	91 (8)	n/a	105 (24)	n/a	93 (9)	n/a	103 (12)
		79–110		81–138		74–113		77–116
Blocks completed	27 (3)	26 (4)	27 (2)	27 (2)	27 (3)	28 (2)	27 (2)	27 (3)
	17–28	15–28	24–28	23–28	19–28	19–28	22–28	18–28
HC	0.38 (0.80)	0.78 (0.69)	1.0 (0.85)	1.1 (1.0)	0.58 (1.3)	0.99 (1.3)	0.99 (1.3)	0.84 (1.2)
	−0.9–1.8	0–2.3	−0.1–2.7	−0.5–2.3	−1.2–3.2	−0.6–3.4	−1.8–3.4	−1.3–3.2

Mean (SD); Range. Early Learning Composite Score (ELCS); Head circumference z-score (HC).