Key risk predictors for the transition from the at-risk status to clinical arthritis

Establishment of key risk predictors for the transition from the at-risk status to clinical arthritis (UA or RA). Core data sets extracted from existing cohorts in the first part of WP2 will be evaluated for their role in predicting the risk to progress from the at-risk state to the clinical state of arthritis (either undifferentiated arthritis or rheumatoid arthritis).