. Author manuscript; available in PMC: 2012 Feb 1.

Published in final edited form as: Read Writ. 2011 Feb 1;24(2):151–182. doi: 10.1007/s11145-010-9262-y

Table 2.

Multiple regression for constant outcome (WIAT II sentence combining) grades 1–4 and predictors (automatic handwriting, spelling, morphological signals, and silent reading comprehension fluency grades 1–4; plus sentence integrity in grade 4)

Grade	R²	df	F	p	Predictor variable	t	p
1	0.53	4,103	10.13	<0.001	PAL Alph 15	0.47	0.64
					WIAT II Spell	1.66	0.10
					Morph signals^**	2.82	0.006
					PAL sentence sense	1.57	0.12
2	0.34	4,111	11.56	<0.001	PAL Alph 15	0.36	0.72
					WIAT II spell^***	4.07	<0.001
					Morph signals	0.45	0.65
					PAL sentence sense	1.81	0.07
3	0.72	4,106	28.01	<0.001	PAL Alph 15^*	1.99	0.05
					WIAT II spell^***	3.96	<0.001
					Morph signals^***	3.74	<0.001
					PAL sentence sense	0.56	0.58
4	0.58	5,96	9.61	<0.001	PAL Alph 15	1.56	0.12
					WIAT II spell^***	3.54	0.001
					Morph signals	1.07	0.29
					PAL sentence sense	0.54	0.59
					Sentence integrity^*	2.11	0.04

p<0.05,

^**

p<0.01,

^***

p<0.001