How can we best characterize the differences in the care received in an IRF vs. a SNF? What makes the care in an IRF and a SNF different? What do they do similarly and what do they do differently? Consider all interventions, e.g., nursing services, physician interventions, physical and occupational therapies, nutritional support, medications, passive motion exercises, weight-bearing exercises. Also consider timing, intensity, frequency, and duration of therapies.