Conditioned on | OR0* | OR1† | ORmh‡ | p Value | ||
x and y | SE and CCP | Erosion (z) | 4.5 (2.6–7.8) | 1.9 (1.1–3.3) | 3.0 (2.1–4.3) | 1.0×10−4 |
y and z | CCP and erosion | SE (x) | 6.0 (3.3–10.8) | 2.5 (1.6–4.0) | 3.5 (2.5–5.1) | 1.0×10−4 |
x and z | SE and erosion | CCP (y) | 2.2 (1.2–3.9) | 0.9 (0.6–1.5) | 1.4 (0.9–1.9) | 0.11 |
*OR0 = Odds ratio for strata where conditioned on variable = 0 (unexposed).
†OR1 = Odds ratio for strata where conditioned on variable = 1 (exposed).
‡ORmh = Mantel-Haenszel odds ratio.
CCP, cyclic citrullinated peptide; HLA-SE, Human leukocyte antigen shared epitope; RA, rheumatoid arthritis; RF, rheumatoid factor.