. Author manuscript; available in PMC: 2009 Jul 1.

Published in final edited form as: Pediatrics. 2008 Jun 9;122(1):e92–e99. doi: 10.1542/peds.2007-3709

TABLE 4.

Mean Difference in Cognitive z Scores in Children With UM Compared With CC at Enrollment and 6- and 24-Month Follow-ups

Cognitive Area	Enrollment (n = 54)		6 mo (n = 52)		24 mo (n = 48)
	Mean Difference (95% CI)^a	P^b	Mean Difference (95% CI)^a	P^b	Mean Difference (95% CI)^a	P^b
Attention	0.44 (−0.03 to 0.91)	.06	0.28 (−0.13 to 0.71)	.17	−0.03 (−0.40 to 0.34)	.88
Working memory	0.05 (−0.38 to 0.49)	.80	−0.11 (−0.44 to 0.24)	.54	−0.11 (−0.49 to 0.28)	.59
Tactile learning	0.27 (−0.23 to 0.77)	.29	0.22 (−0.15 to 0.61)	.25	0.21 (−0.26 to 0.69)	.38

Adjusted for age, gender, nutrition, home environment score, and child’s education levels. Lower scores are worse for attention and working memory; higher scores are worse for tactile learning.

Multiple linear regression analysis.