Table 1:

Relative frequency of anti-topo I antibody in patients diagnosed with systemic sclerosis, diffuse cutaneous systemic sclerosis, systemic lupus erythematosus, and other connective tissue diseases

	Total n (%)	Systemic Sclerosis n (%)	Diffuse Cutaneous Systemic Sclerosis n (%)	Systemic Lupus Erythematosus n (%)	Other CTDs n (%)
Anti-topo I positive by multi-bead	129 (100)	34 (26.4)	9 (7.0)	5 (3.9)	18 (14.0)
Anti-topo I positive by multi-bead and ELISA	51 (39.5)	24 (47.1)	8 (15.7)	2 (3.9)	5 (9.8)
Anti-topo I positive by multi-bead, ELISA and ID	21 (41.2)	20 (95.2)	8 (38.1)	0 (0.0)	0 (0.0)