Hospital-level variability in regional nerve block administration by race for total knee arthroplasty

Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, California, USA Stanford Institute for Economic Policy Research, Stanford University, Stanford, California, USA Anesthesiology and Perioperative Care Service, VA Palo Alto Health Care System, Palo Alto, California, USA CAPER Unit, Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina, USA Research Affiliate Department of Anesthesiology, Durham VA Health Care System, Durham, North Carolina, USA Department of Anesthesiology, University of Nebraska Medical Center, Omaha, Nebraska, USA Department of Health Policy, Stanford University School of Medicine, Stanford, California, USA