Table 4

Sharp scores (absolute values) at baseline and after three and five years in patients with and without anti-CCP ELISA antibodies and with and without APF IIF

Statistical difference between positive and negative for:
Follow upSharp scoreAnti-CCP ELISAAPF IIF
BaselineTotal damage 0.00060.09
Erosions 0.00040.051
Joint space narrowing 0.0320.14
3 yearsTotal damage 0.0070.009
Erosions 0.0150.058
Joint space narrowing 0.0660.009
5 yearsTotal damage 0.0010.008
Joint space narrowing 0.0290.010