Open Access Research article

The likelihood of persistent arthritis increases with the level of anti-citrullinated peptide antibody and immunoglobulin M rheumatoid factor: a longitudinal study of 376 patients with very early undifferentiated arthritis

Maria D Mjaavatten1*, Désirée van der Heijde12, Till Uhlig1, Anne J Haugen3, Halvor Nygaard4, Göran Sidenvall5, Knut Helgetveit6 and Tore K Kvien1

Author Affiliations

1 Department of Rheumatology, Diakonhjemmet Hospital, P.O. Box 23 Vinderen, 0319 Oslo, Norway

2 Department of Rheumatology, Leiden University Medical Center, Albinusdreef 2, Leiden, P.O. Box 9600, 2300RC, The Netherlands

3 Department of Rheumatology, Østfold Hospital Trust, 1603 Fredrikstad, Norway

4 Lillehammer Hospital for Rheumatic Diseases, Margrethe Grundtvigs vei 6, 2609 Lillehammer, Norway

5 Department of Rheumatology, Innlandet Hospital, 2226 Kongsvinger, Norway

6 Martina Hansen Hospital, P.O. Box 23, 1306 Bærum Postal Terminal, Norway

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Arthritis Research & Therapy 2010, 12:R76  doi:10.1186/ar2995

Published: 5 May 2010

Additional files

Additional file 1:

Summary of data collection NOR-VEAC. MS Word file containing a summary of data collection NOR-VEAC.

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