Table 1 Association between LTA use and pattern of organ involvement

LTA type	Lung		Cardiac		Nerve		Skin
LTA type	p Value	OR (95% CI)	p Value	OR (95% CI)	p Value	OR (95% CI)	p Value	OR (95% CI)
Univariate analysis
Pranlukast	0.14	0.2 (0.02 to 1.8)*	0.006	0.15 (0.03 to 0.6)*	0.09	2.9 (0.8 to 10.6)*	0.71	0.8 (0.2 to 2.6)*
Zafirlukast	0.15	1.9 (0.5 to 7.1)*	0.32	3.1 (0.3 to 29.3)*	0.71	0.001 (0 to 1×1017)*	0.28	2.1 (0.5 to 8.1)*
Montelukast	0.35	1.0	0.003	1.0	0.23	1.0	0.41	1.0
Multivariate analysis
Pranlukast	0.43	0.5 (0.1 to 3.2)*	0.01	0.1 (0.03 to 0.7)*	0.05	5.6 (0.97 to 32)*	0.1	0.9 (0.2 to 3.5)
Zafirlukast	0.09	8.3 (0.8 to 59)*	0.6	2.0 (0.2 to 24)*	0.8	0.6 (0.01 to 246)*	0.9	5.6 (0.8 to 40)
Montelukast	0.11	1.0	0.03	1.0	0.15	1.0	0.2	1.0

We performed univariate and multivariate logistic regression examining predictors of the pattern of organ expression (dependent variable), the latter controlling for antineutrophil cytoplasmic antibody status and patient group.
*Compared with montelukast. LTA, leukotriene antagonist.