title: Medicare claims and anesthesia clinical research: a perfect match.
authors.forename: Jeffrey H
authors.initials: JH
authors.lastname: Silber
mesh_terms: D000767:Anesthesia, Epidural; D019644:Arthroplasty, Replacement, Hip / Q000401:mortality; D006801:Humans; D007345:Insurance Claim Review; D010149:Postoperative Pain / Q000628:therapy*; D011183:Postoperative Complications / Q000401:mortality*; D012107:Research Design