BACKGROUND There has been an increasing use of national databases to conduct orthopaedic research. Questions regarding the validity and consistency of these studies have not been fully addressed. The purpose of this study was to test for similarity in reported measures between two national databases commonly used for orthopaedic research. METHODS A retrospective cohort study of patients under...

Background: The ”July effect” is a colloquialism asserting an increased rate of errors at the start of the academicyear in teaching hospitals. This retrospective population-based study evaluated for the presence of the July effect inperforming shoulder arthroplasty.Methods: Using the Nationwide Inpatient Sample for 2002 through 2011, a total of 178,590 patients undergoingshoulder arthroplasty a...

ABBREVIATIONS. MEPS, Medical Expenditure Panel Survey; HCUP, Healthcare Cost and Utilization Project; AHCPR, Agency for Health Care Policy and Research; HC, Household Component; MPC, Medical Provider Component; IC, Insurance Component; ICD-9-CM, International Classification of Diseases, 9th Revision, Clinical Modification; SID, State Inpatient Databases; NIS, Nationwide Inpatient Sample; AHA, A...

ABBREVIATIONS. MEPS, Medical Expenditure Panel Survey; HCUP, Healthcare Cost and Utilization Project; AHCPR, Agency for Health Care Policy and Research; HC, Household Component; MPC, Medical Provider Component; IC, Insurance Component; ICD-9-CM, International Classification of Diseases, 9th Revision, Clinical Modification; SID, State Inpatient Databases; NIS, Nationwide Inpatient Sample; AHA, A...

INTRODUCTION The purpose of this study is to analyze national and institutional trends in shoulder arthroplasty utilization by race. METHODS The Nationwide Inpatient Sample (NIS) was analyzed to determine racial trends in shoulder arthroplasty utilization nationally. An institutional database was then utilized to retrospectively identify all patients undergoing shoulder arthr...