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Orthopaedic Proceedings
Vol. 102-B, Issue SUPP_9 | Pages 68 - 68
1 Oct 2020
Illgen RL Springer BD Bozic KJ Sporer SM Huddleston JI Lewallen DG Porter K Browne JA
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Introduction

The American Joint Replacement Registry (AJRR) is the largest registry of total hip and knee arthroplasty (THA and TKA) procedures performed in the U.S. The National (Nationwide) Inpatient Sample (NIS) is a public database containing demographic estimates based on more than seven million hospitalizations annually. The purpose of this study was to analyze whether AJRR data is representative of the national experience with TJA as represented in NIS

Methods

Cohen's d effect sizes were computed to ascertain the magnitude of differences in demographics, hospital volume (in 50 patient increments), and geographic characteristics between the AJRR and NIS databases.