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RR (relapsing remitting); prog (secondary-progressive, primary-progressive, and progressive relapsing forms of multiple sclerosis); IgG I (IgG index). Association between IgG index status and clinical forms of multiple sclerosis adjusted according to patients' self-declared color. Test of nonassociation: X 2 = 7.7; g.l. = 1; p = 0.0055.
