Fig. 2From: Interaction of Biomechanical, Anthropometric, and Demographic Factors Associated with Patellofemoral Pain in Rearfoot Strike Runners: A Classification and Regression Tree ApproachClassification and regression tree model for Patellofemoral Pain. BGRFI braking ground reaction force impulse; CI = confidence interval; CON = controls; PFP = presence of patellofemoral pain; PR = prevalence ratio; VALR = vertical average loading rate. Bold represents the largest proportion of subjects classified as PFP or CON at the terminal nodeBack to article page