Contributors: MLH, EAH, DN, BG, KHP, TU, GG, M, RvV designed the study and wrote the protocol. RvV, DN, MSH, EAH, Niels Steen Krogh, DG, SK, MLH developed the CRFs. MLH, EAH, AR, DN, MN, BG, JL, KHP, TU, GG, M, MSH, SK, JL, AKHE, KLG, MK, FF, RT, TL, GC, EBa, OH, DV, TSI, TH, MKAL, EBr, TE, AS, MR, RO, PL, LU, SAJ, DJS, TBL, GB, RvV contributed to the data collection and data cleaning. SK and Niels Steen Krogh did data management. JT and ICO conducted the statistical analyses. ICO and SK made the figures. MLH wrote the manuscript with input from all authors. All authors had access to the raw dataset and vouch for the veracity of the results. All authors read and approved the final version of the manuscript including the decision to submit the paper. MLH and RvV are guarantors of the overall content, accept full responsibility for the work and the conduct of the study, had access to the data, and controlled the decision to publish. The corresponding author attests that all listed authors meet authorship criteria and that no others meeting the criteria have been omitted.
Funding: Funding was obtained through public sources: Academy of Finland (grant No 258536), Finska Lkaresllskapet, grant from the South-Eastern Health Region, Norway, HUCH Institutional grant, Finland (grant No 1159005), Icelandic Society for Rheumatology, interregional grant from all health regions in Norway, NordForsk (grant No 70945), Regionernes Medicinpulje, Denmark (grant No 14/217), Stockholm County Council, Sweden (grant No 20100490), Swedish Medical Research Council (grant No C0634901, D0342301, 2015-00891_5), Swedish Rheumatism Association, The Research Fund of University Hospital, Reykjavik, Iceland (A2015017). UCB supported the work in the context of an investigator initiated study where UCB provided certolizumab pegol at no cost. UCB had no role in study design, collection, analysis, and interpretation of data, in the writing of the report, or in the decision to submit for publication. Bristol-Myers Squibb (BMS) provided abatacept at no cost. In addition, the Karolinska Institute received several unrestricted grants from BMS; these were subsequently transferred to the principal investigators of Denmark, Finland, and the Netherlands to help defray various trial related costs at the local level. BMS had no role in study design, collection, analysis, and interpretation of data, in the writing of the report, or in the decision to submit for publication. The final manuscript was provided for courtesy review to UCB and BMS in line with Good Publication Practice (GPP3). We confirm the independence of researchers from funders and that all authors, external and internal, had full access to all of the data (including statistical reports and tables) in the study and can take responsibility of the integrity of the data and the accuracy of the data analysis.
Competing interests: All authors have completed the ICMJE uniform disclosure form at http://www.icmje.org/coi_disclosure.pdf and declare: support from Academy of Finland, Finska Lkaresllskapet, South-Eastern Health Region (Norway), HUCH (Finland), Icelandic Society for Rheumatology, all health regions in Norway, NordForsk, Regionernes Medicinpulje (Denmark), Stockholm County Council (Sweden), Swedish Medical Research Council, Swedish Rheumatism Association, The Research Fund of University Hospital (Reykjavik, Iceland) for the submitted work; MLH reports grants from Nordforsk, from Danske Regioner during the conduct of the study; grants from Bristol-Myers Squibb, grants from AbbVie, grants from Roche, grants from Novartis, grants and personal fees from Merck, grants and personal fees from Biogen, grants and personal fees from Pfizer, personal fees from Eli Lilly, personal fees from Orion Pharma, personal fees from CellTrion, personal fees from Samsung Bioepsi, personal fees from Janssen Biologics BV, personal fees from MSD, outside the submitted work; she chairs the steering committee of the Danish Rheumatology Quality Registry (DANBIO), which receives public funding from the hospital owners and funding from pharamaceutical companies; EAH reports grants from NORDFORSK, grants from the Norwegian Regional Health Authorities, grants from the South-Eastern Norway Regional Health Authority, during the conduct of the study; personal fees from Pfizer, personal fees from AbbVie, personal fees from Celgene, personal fees from Novartis, personal fees from Janssen, personal fees from Gilead, personal fees from Eli-Lilly, personal fees from UCB, outside the submitted work; AR reports grants from the Swedish Research Council, financial support from AstraZeneca, outside the submitted work; DN reports grants from UCB, grants from BMS, during the conduct of the study; grants from AbbVie, grants from Celgene, grants from MSD, grants from Novartis, grants from Pfizer outside the submitted work; MN reports grants from BMS, during the conduct of the study; grants from Abbvie, grants from BMS, personal fees from Celltrion, grants from MSD, grants from Pfizer, personal fees from Eli Lilly, grants from Amgen, outside the submitted work; BG reports personal fees from Novartis, outside the submitted work; TU reports a grant from NORDFORSK during the conduct of the study; personal fees from Grnenthal, personal fees from Lilly, personal fees from Novartis, personal fees from Pfizer, outside the submitted work; M reports grants, personal fees and non-financial support from AbbVie, grants, personal fees and non-financial support from BMS, personal fees from Boehringer-Ingelheim, personal fees from Eli Lilly, personal fees and non-financial support from Janssen, grants, personal fees and non-financial support from Merck, personal fees and non-financial support from Pfizer, personal fees and non-financial support from Roche, grants, personal fees and non-financial support from UCB, grants and personal fees from Celgene, personal fees from Sanofi, personal fees from Regeneron, grants, personal fees and non-financial support from Novartis, personal fees from Orion, personal fees from Hospira, outside the submitted work; MSH reports grants from the South-Eastern Norway Regional Health Authority, during the conduct of the study; personal fees from Lilly, outside the submitted work; SK reports receiving grants from AbbVie, MSD and Novartis outside the submitted work; AKHE reports receiving personal fees from AbbVie, personal fees from Pfizer, outside the submitted work; KLG reports grants from BMS, outside the submitted work; RT reports grants from Finnish Rheumatology Research Fund, during the conduct of the study; OH reports non-financial support from Pfizer, personal fees from Abbvie, personal fees from Novartis, during the conduct of the study; TSI reports non-financial support from DiaGraphIT, personal fees from Abbvie, personal fees from BMS, personal fees from Celgene, personal fees from Medac, personal fees from Merck, personal fees from Novartis, personal fees from Orion Pharma, personal fees from Pfizer, personal fees from Roche, personal fees from Sandoz, personal fees from UCB, personal fees from Bohringer Ingelheim, outside the submitted work; LU reports personal fees from Abbvie, Eli Lilly and Novartis (speaker fees), outside the submitted work; DJS reports grants from KLINBEFORSK, during the conduct of the study; TBL reports personal fees from UCB, outside the submitted work; GB reports personal fees from BMS, outside the submitted work; ABA reports personal fees from Abbvie, personal fees from Eli Lilly, personal fees from Novartis, personal fees from Pfizer, outside the submitted work; AB reports grants from BMS, during the conduct of the study; CT reports grants and personal fees from Bristol Myers-Squibb, personal fees from Roche, personal fees from Abbvie, personal fees from Pfizer, outside the submitted work; HR reports personal fees from MSD, personal fees from Roche, personal fees from Abbvie, personal fees from Celgene, outside the submitted work; JR reports grants from BMS, during the conduct of the study; JW reports fees from Celgene, fees from Eli Lilly, fees from Novartis, outside the submitted work; KM reports personal fees from Abbvie, personal fees from Celgene, personal fees from Medac, personal fees from BMS, outside the submitted work; OKS reports grants from the Research Committee of the Kuopio University Hospital Catchment Area for the State Research Funding, during the conduct of the study; non-financial support from Pfizer, non-financial support from Novartis, non-financial support from MSD, personal fees from Boeringer Ingelheim, outside the submitted work; PP reports personal fees from Novartis Finland Oy, outside the submitted work; R reports personal fees from Bristol-Meyer Squibb, personal fees and non-financial support from AbbVie, personal fees from Gilead, personal fees from Janssen, personal fees from Eli-Lilly, personal fees from Novartis, outside the submitted work; SNC reports personal fees from Bristol Myers Squibb, personal fees from General Electric, outside the submitted work; SE reports personal fees from Novartis, outside the submitted work; TO reports personal fees from Eli Lilly, consultancy fee from Merck Sharp and Dohme, outside the submitted work; reports grants from BMS, during the conduct of the study; grants from Roche, grants from Mylan, other from Abbvie, outside the submitted work; VR reports grants from BMS, during the conduct of the study; grants from Roche, grants from Mylan, other from Abbvie, outside the submitted work; RvV reports grants from BMS, during the conduct of the study; grants from BMS, GSK, Lilly, UCB, grants from Pfizer, Roche, personal fees from AbbVie, AstraZeneca, Biogen, Biotest, Celgene, Galapagos, Gilead, Janssen, Pfizer, Servier, UCB, outside the submitted work; no other relationships or activities that could appear to have influenced the submitted work.
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