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. Author manuscript; available in PMC: 2007 Oct 1.
Published in final edited form as: Pediatrics. 2006 Oct;118(4):e1100–e1108. doi: 10.1542/peds.2006-0092

TABLE 3.

Neuropsychology: Mean IQ and Processing Speed Index (WPPSI-III), Visual Attention and Design Copying (NEPSY) Scores

Variable Controls, Mean (SD) SDB, Mean (SD) Group Difference (P) P Adjusted for CBFV
VIQ 112.5 (10.8) 110.2 (13.7) NS
PIQ 104.4 (9.8) 105.1 (13.2) NS
FSIQ 110.3 (8.0) 108.3 (13.0) NS
Processing speed quotient 106.1 (11.7) 95.8 (14.9) t29 = -2.1 (.044) .265
Visual attention (scaled score) 12.5 (3.2) 10.5 (2.4) t35 = -2.1 (.037) .304
Design copying (raw score) 33.7 (16.6) 32.0 (13.3) NS

Significant group differences for measures of visual attention and processing speed were reduced with the inclusion of CBFV as a covariate, indicating that factors associated with this variable may contribute to the relationship between SDB and cognitive deficit. NS indicates not significant.