Finally, a random effects meta-regression was conducted to evaluate the relationship between age at injury and Hedge's g of externalizing symptoms. Overall, the model was nonsignificant, Q (2) = .0947. Goodness of fit analyses indicated that the model explained a significant non-zero proportion of variance Q (13) = 24.74, p = 0.0184. The R2 analog for this meta-regression was .27, indicating that this model accounted for 27% of the between-study variance. GCS was a significant predictor of Hedge's g, 𝛽 = 0.0519, p = 0.03. The coefficient for age at injury was not significant, 𝛽 = 0.0087, p = 0.8696. Table ? reports the coefficent, standard error, and confidence interval information for this meta-regression.