. Author manuscript; available in PMC: 2015 Jan 29.

Published in final edited form as: Am J Hematol. 2014 Feb;89(2):162–167. doi: 10.1002/ajh.23604

TABLE I.

Demographics of Children with Sickle Cell Anemia Screened with Cognitive Assessments in the Silent Infarct Transfusion Trial

Characteristic	N	No SCI (N = 43)	SCI (N = 107)	P value
Age of child (years)	150	8.5	9.2	0.096^a
Gender (male, %)	150	53.5	53.3	0.981^b
Hemoglobin (g/dl)	150	8.28	8.03	0.204^a
WBC per μl	150	12,017	13,486	0.284^a
Pain event rate (episodes per 3 years)	149	0.75	0.55	0.286^c
		0.33 (median)	0.33 (median)
Baseline oximetry (percent saturation)	150	96.9	96.3	0.230^c
Individual education plan implemented (%)	150	20.9	16.8	0.554^b
Medicaid health care coverage for child (%)	149	53.5	67.9	0.097^b
Marital status of parents (married, %)	150	39.5	40.2	0.941^b
Age of mother (years)	140	34.8	34.1	0.548^a
Age of father (years)	119	37.9	36.5	0.388^a
No. people age 16 and younger in household	150	2.65	2.74	0.737^a
No. people age 17 and older in household	150	1.81	1.78	0.811^a
Head of household education (some college or more, %)	150	60.5	57.0	0.698^b
Income per capita in thousand dollars	150	11.04	8.36	0.123^c
		7.00 (median)	7.00 (median)
Full-scale IQ	150	100.53	93.12	0.002^a

T-test.

Chi-square test.

Mann–Whitney U test.