In particular, while age and race were Significantly related to the use of a firearm, the addition of clinical variables to demographic and historical variables did not improve characteristics were added to demographic and historical factors in the model, neither offense characteristics nor the overall model was significant. Guilty verdicts were not significantly associated with demographic and historical factors. Adding clinical factors did not improve the model, and neither demographic and historical nor clinical factors were associated with a guilty verdict. When offense characteristics were added to demographic and historical factors, neither the offense characteristics as a group nor the demographic/historical and offense characteristics were associated with a guilty verdict.