Table 6. Regression and Partial Correlation Analyses for Get Ready to Read! Screener (GRTR) Predicting Letter and Reading Outcome Measures Within Long-Term Follow-Up Sample, Controlling for Age at Initial Assessment and Length of Interval.

Follow-Up Measure	B	Standard Error	β/sr2	R2	GRTR Partial Corr.a
Letter Name (69)
Age	.46	.11	.51***/.18
Interval	.41	.10	.41***/.16
GRTR	−.03	.18	−.02/.00	.34	.18
Letter Sound (69)
Age	.27	.04	.64***/.28
Interval	.23	.04	.51***/.25
GRTR	.04	.07	.06/.00	.60	.13
Word Identification (111)
Age	.80	.32	.21*/.04
Interval	1.80	.27	.50***/.24
GRTR	1.11	.46	.20*/.03	.41	.53*
Word Attack (111)
Age	.21	.17	.11/.01
Interval	.76	.14	.43***/.19
GRTR	.62	.24	.23*/.04	.30	.57*
Frequent Words (69)
Age	.19	.10	.22/.03
Interval	.52	.09	.54***/.29
GRTR	.37	.17	.25*/.05	.41	.41
TOWRE-SS (64)
Age	−1.01	.43	−.30*/.08
Interval	−.34	.36	−.12/.01
GRTR	1.05	.44	.30*/.08	.13	.66**
Passage Comp. (44)
Age	.06	.34	.03/.00
Interval	.84	.28	.43**/18
GRTR	.50	.39	.19/.01	.24	.55*
GORT-4 ORQ (42)
Age	−1.20	.61	−.29/.07
Interval	−.55	.52	−.15/.02
GRTR	2.59	.69	.55**/.27	.29	.68**

Note: Sample sizes at follow-up are noted parenthetically. R² reported for full model with GRTR and both covariates entered; models run with simultaneous entry. TOWRE-SS = Test of Word Reading Efficiency–Standard Score; Passage Comp. = Passage Comprehension subtest of the Woodcock Johnson Test of Achievement; GORT-4 = Gray Oral Reading Test–4th Edition; ORQ = Oral Reading Quotient.

^aPartial correlation for GRTR controlling for age at screening and length of interval with long-term follow-up assessment.

^*p < .05.

^**p < .01.

^***p < .001.