Table 2.

Group difference in executive function, functional outcomes, and behavior.

		Preterm		Full Term
Executive Functiona		(n = 66)		(n = 79)
BRIEF		Mean (SD)	Range	Mean (SD)	Range	t	p
Global Executive Composite (GEC)		54.3 (15)	31–95	43.5 (8)	33–67	−5.2	< .001*
EF Battery		(n = 70)		(n = 79)
Z-score		−.844 (1.1)	−4.19–.6	−.004 (.52)	−1.37–1.2	5.91	<.001*
Outcomesa
Vineland		(n = 61)		(n = 74)
Adaptive Behavior Composite (ABC)		97 (12.7)	68–128	111 (11.6)	79–134	6.91	<.001*
Test of Preschool Early Literacy		(n = 38)		(n = 37)
Phonological Awareness		103 (16)	65–129	112 (13)	79–129	2.79	.007*
Child Behavior Checklist (CBCL)		(n = 68)		(n = 79)
Total		48.6 (10.7)	28–77	40.6 (7.2)	28–62	−5.3	< .001*
Internalizing		48.5 (11.2)	29–73	42.3 (8.3)	29–64	−3.8	< .001*
Externalizing		48.2 (10.7)	28–76	40.5 (8.1)	28–65	−4.9	< .001*
Proportionsb						X2	p
GEC		n (%) with T-score > 64		n (%) with T-score > 64
		16 (24)		1 (1.3)		18.3	< .001*
Z-score		n (%) with score ≤ −1SD		n (%) with score ≤ −1SD
		25 (36)		2 (3)		28	<.001*
ABC		n (%) with score <85		n (%) with score <85
		10 (16.4%)		1 (1.4%)		10.1	.001*
Phonological Awareness		n (%) with score <85		n (%) with score <85
		1 (2.7%)		5 (13.2%)		2.8	.095
CBCL		n (%) with T-score > 59		n (%) with T-score > 59
Total		11 (16.2)		1 (1.3)		10.8	.001*
Internalizing		12 (17.6)		4 (5.1)		6.0	.015*
Externalizing		9 (13.2)		1 (1.3)		8.3	.004*

^aData analyzed by t-test

^bData analyzed by chi-square (asymptotic or exact significance: 2-sided)