From: Smoking is not linked to the development of anti-peptidylarginine deiminase 4 autoantibodies in rheumatoid arthritis
Variable
OR (95% CI)
p-value
With Shared Epitope
0.7 (0.3–1.3)
0.25
No Shared Epitope
0.9 (0.3–2.6)
0.90
Duration > 10
0.9 (0.4–1.9)
0.75
Duration < 10
0.8 (0.3–2.0)
0.66