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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: J Child Psychol Psychiatry. 2011 Jan;52(1):56–63. doi: 10.1111/j.1469-7610.2010.02294.x

Table 2.

Marginal means for each symptom cluster by group and effect sizes (Cohen’s d) for the differences between internationally adopted and non-adopted children.

Parent report Child report
Marginal means Effect size Marginal means Effect size
PI EA/FC NA PI vs. NA EA/FC vs. NA PI EA/FC NA PI vs. NA EA/FC vs. NA
ADHD .25a .15b .13b .46 --- .44a .40a .33b .27 .20
 Clinical Percentage 22.7 5.6 2.7 19.7 7.0 8.3
Externalizing .12a .10a .07b .29 .19 .26a .25a .19b .20 .18
 Clinical Percentage 9.0 9.6 1.3 13.6 7.0 4.1
Internalizing .13a .12a .09b .25 .17 .36a .33a,b .29b .19 ---
 Clinical Percentage 11.9 9.7 2.7 15.2 4.2 4.1

Note. Means with different subscripts are significantly different at p< .05. Mean comparisons control for age, sex, family income, average parental education, and enrichment. Effects of child age, sex, parental education, income, and enrichment are controlled before effect sizes are calculated. Effect sizes are shown for significant contrasts.