At the follow-up evaluation, each patient will complete a global rating of change (GROC). Patients will rate their overall perception of improvement since beginning treatment on a scale ranging from -7 (a very great deal worse) to zero (about the same) to +7 (a very great deal better). It has been recommended that scores on the GROC between ±3 and ±1 represent small changes; scores between ±4 and ±5 represent moderate changes, and scores of ±6 or ±7 large changes.