Three handy tips and a practical guide to improve your propensity score models by Sofia Ramiro, Robert Landewé, Sytske Anne Bergstra, Alexandre Sepriano

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Prednisone use, disease activity and the occurrence of hyperglycaemia and diabetes in patients with early rheumatoid arthritis: a 10-year subanalysis of the BeSt study by Cornelia F Allaart, Tom W J Huizinga, Sytske Anne Bergstra, Willem Lems, Sjoerd M van der Kooij, Joy Ardjuna van der Pol

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Earlier is better when treating rheumatoid arthritis: but can we detect a window of opportunity? by Cornelia F Allaart, Tom W J Huizinga, Sytske Anne Bergstra, Yvonne P M Goekoop-Ruiterman, Willem Lems, Naghmeh Riyazi, Pit J S M Kerstens, Joy A van der Pol

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Value of the 6 min walk test in detecting cardiopulmonary involvement in patients with systemic sclerosis by Sytske Anne Bergstra, Oliver Distler, Cosimo Bruni, Jeska De Vries-Bouwstra, Tom WJ Huizinga, Suzana Jordan, Saad Ahmed, Jacopo Ciaffi, Maarten Ninaber, Sophie I E Liem, Eva M Hoekstra, A A Schouffoer, D Ueckert, Hubert Vliegen

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Rheumatoid arthritis and psoriatic arthritis: is the disease impact different? A large matching study at diagnosis and after 1 year of treatment by Annette H M van der Helm-van Mil, Pascal H P de Jong, Sytske Anne Bergstra, Elise van Mulligen, Ilja Tchetverikov, Jolanda J Luime, Marijn Vis, Marc R Kok, Maikel van Oosterhout, Jos H van der Kaap, Selinde V J Snoeck Henkemans, Anne-Fleur van den Biggelaar

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