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. 2019 May 31;5(1):e000942. doi: 10.1136/rmdopen-2019-000942

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© Author(s) (or their employer(s)) 2019. 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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Multivariate Cox proportional hazards model of time to first serious infectious events. For some subgroups, the small sample size may preclude accurate assessment of results. The patient population in South Africa included CD patients only. All reported p values and CIs are nominal and can only be interpreted in an exploratory manner. *Derived from model parameter estimates. axSpA, axial spondyloarthritis; BMI, body mass index; CD, Crohn’s disease; MTX, methotrexate; PsA, psoriatic arthritis; PSO, psoriasis; RA, rheumatoid arthritis; TNF, tumour necrosis factor.