Fig 4. Comparison of the HR obtained by Cox proportional analysis of the three RA autoantibodies.

(A) The three antibodies, RF, anti-CCP and anti-CarP, considered each of them separately; and (B) the three antibodies considered conditional on the other two (indicated by the apostrophe, ‘, over them). Error bars correspond to the 95% CI. The asterisks, *, denote significantly increased HR.