. Author manuscript; available in PMC: 2013 Mar 21.

Published in final edited form as: Read Writ. 2007 Apr-Jun;42(2):188–213. doi: 10.1598/RRQ.42.2.1

Table 6.

Best-Fitting Multiple Regression Equations and Adjusted R² for Three Measures of Literacy

	Original Equation		Cross-Validated Sample A (70%)		Cross-Validated Sample B (30%)

Variable	Beta+	Adjusted R²	Beta+	Adjusted R²	R(A,B)
WRMT-R Passage Comprehension		.05^**		.04	.72
Age in Years	−.179∇^**		−.228∇^**
Literacy Practice Pattern	−.188∇^**		−.117∇
NAEP Reading		.04^*		.06	.62
Age in Years	.183^**		.262^**
Literacy Practice Pattern	.142^*		.073
CASAS Reading		.04^**		.03	.75
Age in Years	.152^*		.168^*
Literacy Practice Pattern	.173^**		.146

Notes: ∇ a negative sign resulted from transformation of the variables. +Betas are standardized coefficients.

p < .05.

^**

p < .01.

^***

p < .001.