FIGURE 7. Relative hospital margin has no significant correlation with total annual OR hours used by each service (P < 0.05). Neurosurg, neurosurgery department; Cardiac, cardiac surgery division; GIS, gastrointestinal surgery division; TXP, liver, kidney, and pancreas transplant; CRS, colorectal surgery division; Thoracic, thoracic surgery division; Vascular, vascular surgery division; EOS, endocrine trauma and surgical critical care division; ORL, otorhinolaryngology; TraumSC, trauma and surgical critical care; GYN, gynecologic surgery; Urology, urology division; Plastics, plastic surgery division; Ortho, orthopedic surgery; OMFS, oral maxillofacial surgery department.