Frequencies (%) of anti-HSC 70 IgG and IgM and anti-HSP 90 IgG and IgM in 73 longstanding RA patients with or without serological markers for adult RA (RF: rheumatoid factor; AKA: antikeratin antibody; APF: antiperinuclear factor; Sa: anti-Sa antibody; RA-33: anti-RA-33 antibody)
| Anti-HSC 70 | Anti-HSP 90 | ||||||
|---|---|---|---|---|---|---|---|
| IgG | IgM | IgG | IgM | ||||
| RF | + | 49.0 | 44.5 | 51.03-150 | 55.5 | ||
| − | 25.0 | 32.0 | 21.4 | 46.4 | |||
| AKA | + | 39.5 | 46.7 | 47.4 | 52.6 | ||
| − | 45.7 | 45.7 | 25.6 | 57.1 | |||
| APF | + | 40.0 | 34.3 | 40.0 | 48.6 | ||
| − | 39.5 | 47.4 | 39.5 | 55.2 | |||
| Sa | + | 42.8 | 48.6 | 51.4† | 54.3 | ||
| − | 36.8 | 36.8 | 26.3 | 52.6 | |||
| RA 33 | + | 37.5 | 54.2 | 37.5 | 50.0 | ||
| − | 40.8 | 36.7 | 38.8 | 55.1 | |||
↵3-150 χ2 c=5.17; p=0.023.†χ2 c=3.85; p<0.05.