Figure 1From: Reliability of the Multidimensional Pain Inventory and stability of the MPI classification system in chronic back pain Multidimensional Pain Inventory subgroup classification changes T0: 4 weeks before entry to pain management program, T1: at entry to pain management program, MPI: Multidimensional Pain Inventory, ID: MPI cluster interpersonally distressed, AC: MPI cluster adaptive copers, DYS: MPI cluster dysfunctional, K: Cohen's Kappa coefficient. Back to article page