Table 3.

Group differences in academic achievement with paired sample t-tests on standard scores (Norm M = 100, SD = 10)

Achievement outcome	Pairs	CMS patients		Control patients		Paired comparison
	n	M	SD	M	SD	t	P-value
Oral language	19	87.3	15.7	106.8	13.3	4.18	.001
Verbal comprehension	21	93.0	19.6	107.6	15.5	2.71	.013
Broad reading	14	83.8	14.0	101.4	13.0	3.18	.007
Reading comprehension	10	91.7	13.8	102.2	13.2	1.91	.087
Spelling	20	85.7	24.1	106.1	11.5	3.63	.002
Math calculation skills	15	83.3	16.1	95.4	13.3	3.06	.008
Math reasoning	18	83.8	16.5	101.5	10.6	4.07	.001