Beginning with behavioral disorders, Table 5 shows the headstrong dimension significantly predicted later CD. Prediction from irritability fell only a little below significance, and there was no evidence that effects of the two dimensions differed. In further analyses we examined prediction to aggressive and non-aggressive CD symptom counts. An ordinal logistic regression model showed that the irritability (OR=1.3, 95% CI 1.1, 1.6; p=.01) and headstrong (OR=1.4, 95% CI: 1.2, 1.7; p<.001) dimensions predicted maximum aggressive CD symptom count over future observations. Non-aggressive CD symptoms were also predicted by headstrongness (OR=1.4, 95% CI: 1.2, 1.6; p<.001) while irritability (OR=1.2, 95% CI: 1.0, 1.5; p=.058) fell just below significance. Given the overlap in the confidence intervals, however, there was no convincing evidence of differential prediction of aggressive and non-aggressive CD symptoms.
