Table 1
Characteristics of the RA patient groups
RA patient group
Number
% Female
% Seropositive
% With erosions
% With nodules
% HLA-DR4
UK RA1
75
75
76
96
31
65
UK RA2
66
70
NA
NA
NA
65
UK RA3
87
69
NA
NA
NA
60
Swiss RA
132
74
76
74
30
50