borderline significantp = 0.06
Seropositivity for IgA-RF was significantly more frequent in this time period compared with the ACPA most frequently detectable (i.e., anti-Fibβ 36–52 ) and borderline significant for IgM-RF ( p = 0.06).
Seropositivity for IgA-RF was significantly more frequent in this time period compared with the ACPA most frequently detectable (i.e., anti-Fibβ 36–52 ) and borderline significant for IgM-RF ( p = 0.06).