Table 1. Number of participants from a 1-year follow-up in the EAC subpopulation who are positive for 0, 1, 2 or 3 IgG autoantibodies and the mean (M ± SD) total IgG serum levels for every group. EAC, Early Artritis Clinic.

Number of IgG autoantibodies	Participants positive	Total serum IgG levels (M ± SD)
0	5	16 ± 9.1
1	44	12 ± 4.4
2	33	14 ± 5.7
3	19	15 ± 5.6