Table 2

Data on possible predictors of extra-articular disease in the RA cohort

No%
*Of 372 ever tested for ANA;
†data available for 574;
‡data available for 606.
Male sex16426.9
RF positive (at diagnosis)18530.4
RF positive (at any time)35257.8
ANA positive (at any time)19552.4*
Ever smokers at RA diagnosis317†55.2
Steinbrocker functional class at RA diagnosis‡
    I548.9
    II42770.5
    III11719.3
    IV81.3