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. 2024 Mar 15;10(1):e003741. doi: 10.1136/rmdopen-2023-003741

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© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Scatter plots between the CRP-PMR-AS* and the ESR-PMR-AS† (A), clin-PMR-AS‡ (B) and imp-CRP PMR-AS§ (C) at inclusion for all the patients (n= 100). Trendlines are represented by a continuous line. The CPR-PMR-AS is the algebraic sum of morning stiffness in minutes multiplied by 0.1, ability to elevate the upper limbs on a scale of 0 to 3, physicians global assessment on a 10-point visual analog scale, patient-reported pain intensity on a 10-point VAS, and CRP level in mg/dL. Higher values indicate greater disease activity. Values below 7 define low disease activity; between 7 and 17, moderate disease activity; and greater than 17, high activity. † The ESR-PMR-AS uses the ESR in minutes multiplied by 0.1 instead of the CRP level. ‡ The clin-PMR-AS is the sum of the clinical items. § The imp-CRP PMR-AS is calculated with the formula 1.12(clin-PMR-AS)+0.26. PMR: polymyalgia rheumatica; AS: activity score; ESR: erythrocyte sedimentation rate; CRP: C reactive protein; clin: clinical; imp-CRP: imputed CRP.