Table 3.

Associations between anti-PAD4 antibody presence and ever smoking in stratified analyses

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

OR Odds ratio from univariate logistic regression, CI confidence interval