Group-based developmental trajectories of non-partner violence in a high-risk urban youth sample at their baseline Emergency Department visit and during the following 24-month period (N=599)a
a Percentages reported in the figure are percentages of the total sample. Baseline non-partner violence levels represent the frequency and severity of non-partner violence in the six months leading up to participants’ initial ED visit. Groups 1, 3, and 6 increased (P < .001). Groups 2, 4, and 5 decreased (P < .001). Groups 3, 4, 5, and 6 had curvilinear relationships (P < .001).