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Percentage of total prevalent osteoarthritis (OA) cases accounted for by OA at each site (knee, hip, hand, or other) in 1990 and 2019, globally, by Socio‐demographic Index (SDI) category and by geographic region, for both sexes combined. Color figure can be viewed in the online issue, which is available at http://onlinelibrary.wiley.com/doi/10.1002/art.42089/abstract.
