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. 2023 Mar 16;9(1):e002936. doi: 10.1136/rmdopen-2022-002936

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© Author(s) (or their employer(s)) 2023. Re-use permitted under CC BY. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution 4.0 Unported (CC BY 4.0) license, which permits others to copy, redistribute, remix, transform and build upon this work for any purpose, provided the original work is properly cited, a link to the licence is given, and indication of whether changes were made. See: https://creativecommons.org/licenses/by/4.0/.

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XY scatter plot showing the annual rate of change of DAS28 in the random coefficient model before and after COVID-19 vaccination in patients with (A) RA and (B) PsA in the total population and separated into TNF-i treated and non-TNF-i treated. Numbers represent mean±SE. DAS28, Disease Activity Score in 28 joints; PsA, psoriatic arthritis; RA, rheumatoid arthritis; TNF-i, tumour necrosis factor inhibitor.