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. 2023 Mar 24;42(7):1801–1810. doi: 10.1007/s10067-023-06584-x

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Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — Pathway diagrams for Model 1, 2a and 2b. Structural equation models investigating the direct effect of the presence of rheumatoid arthritis on estimated cardiorespiratory fitness (──), and the indirect effect through either physical symptoms (----) or negative emotions (─ · ─). Latent variables are represented as circles, observed variables as squares, and pathways with arrows