Table 5.

Linear regression analyses

		B (SE)	Beta	P	R2 change
Linear regression: Severity of language impairment (total CELF-3uk score)
Step 1
Predictors:	AC	2.87 (0.47)	0.68	<0.0001	0.451, P < 0.0001
Step 2 (final model)
Predictors:	AC	1.84 (0.51)	0.44	0.001	0.122, P = 0.001
	CC segment V	1.57 (0.44)	0.43	0.001
Linear regression: CELF-3UK residuals (after removing PIQ)
Step 1 (final model)
Predictors:	AC	1.73 (0.37)	0.58	<0.0001	0.32, P < 0.0001

AC = anterior commissure; CC = corpus callosum; PIQ = performance IQ.