Objective: To collect data on vitamin D (25(OH)D) serum levels in a large number of rheumatoid arthritis (RA) patients from different European countries, to investigate their relation with disease activity, disability, quality of life, and possibly to construct a new Patient Reported Outcome (PRO) questionnaire in order to self-estimate if they...
-
2017 (v1)PublicationUploaded on: April 14, 2023
-
2018 (v1)Publication
Objectives: To assess the validity of the rheumatoid arthritis impact of disease (RAID) for measuring disease activity of rheumatoid arthritis (RA) and to determine cut-off values for defining the disease activity states. Methods: A total of 622 RA patients from an European database have been included. Cross-validation was based on assessment...
Uploaded on: April 14, 2023