Skip to main content
. Author manuscript; available in PMC: 2021 Jan 1.
Published in final edited form as: Sci Stud Read. 2019 Jul 8;24(1):23–56. doi: 10.1080/10888438.2019.1631827

Table 7.

Moderators of bivariate shared environmental correlations for reading and ADHD symptoms.

Moderator k QM(df) p τ2 I2 (%) R2 (%)
Age 55 6.70(1) .01 0.73 100.0 9.56
ADHD Reliability 34 0.45(1) .50 0.27 100.0 0.00
Race Reported 25 3.85(1) .05 1.12 100.0 10.60
Race Inferred 55 27.82(1) <.01 0.54 100.0 33.19
Grade-Level 5 44.69(1) <.01 0.00 52.1 97.21
Project 49 13.02(5) .02 0.42 100.0 14.33
Nationality 55 14.78(3) <.01 0.66 100.0 17.92
Clinical Status 55 0.12(1) .73 0.82 100.0 0.00
Reading Assessment 55 53.34(9) <.01 0.44 100.0 45.11
Reading Domain 55 10.52(6) .11 0.74 100.0 7.73
Reading Assessment Format 91 6.30(5) .28 0.17 99.8 1.46
ADHD Assessment 88 48.06(8) <.01 0.12 99.8 31.78
ADHD Component 91 3.58(2) .17 0.17 99.8 1.71

Note. Significant (p < .05) moderators are indicated in bold. k represents the number of studies included in the analysis. R2 indicates the total amount of heterogeneity accounted for by the specified moderator. SES reported did not show sufficient variability for moderator analyses. No rC between reading and ADHD were calculated for studies using the DeFries-Fulker method.