Table 6

 Model assessment

Increase in countClinicalClinical damage in hands and feetRadiological
ObservedPredictedObservedPredictedObservedPredicted
(A) Observed increases in damaged joint counts
044364432.347264721.5627644.7
1–452935305.9538153393.612181193.3
5–10152135.910790.6132130.7
>106164.33740.83157
Increase in joint countCentile of the prediction score
(B) Estimated probabilities of new damage over a 2-year period
10%30%50%70%90%
00.8210.7600.6930.6370.583
1–40.1650.2010.2220.2260.221
>40.0140.0390.0850.1370.195