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Intra and Interobserver Agreement Regarding the Walch Classification System for Shoulder Joint Arthritis[*]Article in several languages: português | English
13 October 2017
03 April 2018
13 December 2019 (online)
Objective To evaluate the inter- and intraobserver agreement regarding the Walch classification system for shoulder arthritis.
Methods Computed tomography scans of the shoulder joint of adult patients were selected between 2012 and 2016, and they were classified by physicians with different levels of expertise in orthopedics. The images were examined at three different times, and the analyses were evaluated by the Fleiss Kappa index to verify the intra- and interobserver agreement.
Results The Kappa index for the intraobserver agreement ranged from 0.305 to 0.545. The inter-observer agreement was very low at the end of the three evaluations (κ = 0.132).
Conclusion The intraobserver agreement regarding the modified Walch classification varied from moderate to poor. The interobserver agreement was low.
* Work developed at Hospital da Pontifícia Universidade Católica de Campinas, Campinas, SP, Brazil. Originally Published by Elsevier.
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