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. Author manuscript; available in PMC: 2011 Sep 1.
Published in final edited form as: J Clin Child Adolesc Psychol. 2010 Sep;39(5):650–666. doi: 10.1080/15374416.2010.501287

Table 4. Hierarchical Multiple Regressions of CBCL, TRF and TOF Scales Predicting Parent and Teacher Reports of Hyperactivity-Impulsivity.

Parent-rated Hyperactivity-Impulsivitya Teacher-rated Hyperactivity-Impulsivityb
Predictors B R2 ΔR2 Adj.R2 Semi-partial r2 B R2 ΔR2 Adj.R2 Semi-partial r2
Model 1a
Step 1 .46*** .45 .54*** .53
CBCL Attention Problems .62*** .34 .01 .00
TRF Attention Problems .15** .02 .73*** .48
Step 2 .49*** .03*** .48 .55*** .01** .54
CBCL Attention Problems .59*** .30 .00 .00
TRF Attention Problems .11*c .01 .71*** .44
TOF Attention Problems-WISC-IV .18*** .03 .11** .01
Model 1b
Step 1 .46*** .45 .54*** .53
CBCL Attention Problems .62*** .34 .01 .00
TRF Attention Problems .15** .02 .73*** .48
Step 2 .48*** .02** .47 .54*** .01 .54
CBCL Attention Problems .59*** .31 .00 .00
TRF Attention Problems .12** .01 .71*** .45
TOF Oppositional-WISC-IV .15** .02 .08e .01
Model 1c
Step 1 .63*** .63 .71*** .71
CBCL Attention Deficit/Hyperactivity Problems .74*** .47 .06 .00
TRF Attention Deficit/Hyperactivity Problems .13** .01 .82*** .58
Step 2 .64*** .01* .63 .72*** .00 .71
CBCL Attention Deficit/Hyperactivity Problems .72*** .43 .06 .00
TRF Attention Deficit/Hyperactivity Problems .11** .01 .81*** .54
TOF Attention Deficit/Hyperactivity Problems-WISC-IV .08*c, d .01 .04 .00

Note: N = 310. B = Standardized Beta weights; Adj. R2 = Adjusted R2; Semi-partial r2 = unique variance accounted for by each predictor. CBCL = Child Behavior Checklist; TRF = Teacher's Report Form; TOF = Test Observation Form.

a

From Attention Deficit/Hyperactivity Disorder Rating Scale-IV-Home version.

b

From Attention Deficit/Hyperactivity Disorder Rating Scale-IV-School version

c

Possible chance effect when corrected for number of analyses (Sakoda, Cohen & Beall, 1954).

d

With removal of two outliers, Beta = .07, p = .065.

e

With removal of one outlier, Beta = .08, p = .042.

*

p <.05.

**

p <.01.

***

p <.001.