Table 1.

Participant characteristics at intervention start (n = 219)

	Intervention (n = 172)	Control (n = 47)
	M (SD)	M (SD)
Age in months	89.2 (12.2)	91.5 (11.9)
WRMT-R Word Attack Scaled Score	76.6 (9.3)	74.2 (8.2)
WRMT-R Word Identification Scaled Score	81.1 (9.9)	77.7 (11.1)
WRMT-R Passage Comprehension Scaled Score	79.2 (8.9)	76.9 (10.6)
WRAT-III Reading Scaled Score	85.4 (10.0)	79.3 (10.0)
WISC Freedom from Distractibility Index	87.3 (12.6)	83.2 (12.6)
WISC Processing Speed Index	96.6 (15.2)	95.1 (13.8)
Kaufman Brief Intelligence Test	92.6 (10.4)	93.0 (10.6)
Peabody Picture Vocabulary Test	92.1 (13.6)	98.1 (14.9)
Proportion Male	.624	.702
Number in Grade 1	79	18
Number in Grade 2	43	13
Number in Grade 3	51	16
Proportion Low Socio-Economic Status	.487	.574