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Proposal for levels of evidence schema for validation of a soluble biomarker reflecting damage endpoints in rheumatoid arthritis, psoriatic arthritis, and ankylosing spondylitis, and recommendations for study design.
Maksymowych WP, Fitzgerald O, Wells GA, Gladman DD, Landewé R, Ostergaard M, Taylor WJ, Christensen R, Tak PP, Boers M, Syversen SW, Bathon JM, Ritchlin CJ, Mease PJ, Bykerk VP, Garnero P, Geusens P, El-Gabalawy H, Aletaha D, Inman RD, Kraus VB, Kvien TK, van der Heijde D. Maksymowych WP, et al. Among authors: christensen r. J Rheumatol. 2009 Aug;36(8):1792-9. doi: 10.3899/jrheum090347. J Rheumatol. 2009. PMID: 19671814
Developing a construct to evaluate flares in rheumatoid arthritis: a conceptual report of the OMERACT RA Flare Definition Working Group.
Alten R, Pohl C, Choy EH, Christensen R, Furst DE, Hewlett SE, Leong A, May JE, Sanderson TC, Strand V, Woodworth TG, Bingham CO 3rd; OMERACT RA Flare Definition Working Group. Alten R, et al. Among authors: christensen r. J Rheumatol. 2011 Aug;38(8):1745-50. doi: 10.3899/jrheum.110400. J Rheumatol. 2011. PMID: 21807796
Establishing a core domain set to measure rheumatoid arthritis flares: report of the OMERACT 11 RA flare Workshop.
Bykerk VP, Lie E, Bartlett SJ, Alten R, Boonen A, Christensen R, Furst DE, Hewlett S, Leong AL, Lyddiatt A, March L, May JE, Montie P, Orbai AM, Pohl C, Scholte Voshaar M, Woodworth T, Bingham CO 3rd, Choy EH. Bykerk VP, et al. Among authors: christensen r. J Rheumatol. 2014 Apr;41(4):799-809. doi: 10.3899/jrheum.131252. Epub 2014 Mar 1. J Rheumatol. 2014. PMID: 24584927 Free PMC article. Review.
Dialogue on Developing Consensus on Measurement and Presentation of Patient-important Outcomes, Using Pain Outcomes as an Exemplar, in Systematic Reviews: A Preconference Meeting at OMERACT 12.
Tugwell PS, Maxwell LJ, Beaton DE, Busse JW, Christensen R, Conaghan PG, Simon LS, Terwee C, Tovey D, Wells GA, Williamson P. Tugwell PS, et al. Among authors: christensen r. J Rheumatol. 2015 Oct;42(10):1931-1933. doi: 10.3899/jrheum.141430. Epub 2015 Feb 1. J Rheumatol. 2015. PMID: 25641896
1,965 results