Table 2.

Distribution of olfactory dysfunction in PD patients and controls

	LRRK2-PD (n = 25)	iPD (n = 43)	Control (n = 118)	LRRK2-PD vs iPD P1, OR (95% CI)	iPD vs control P2, OR (95% CI)	LRRK2-PD vs control P3, OR (95% CI)
Normal/mild olfactory dysfunction [n, (%)]	1 (4.0%)	6 (14.0%)	36 (30.5%)	Ref	Ref	Ref
Severe olfactory dysfunction [n, (%)]	24 (96.0%)	37 (86.0%)	82 (69.5%)	0.221 3.892(0.441–34.375)	0.021 3.921(1.233–12.466)	0.018 12.725(1.556–104.029)

P1 values were not adjusted because of the small sample size (n = 7) in the normal/mild olfactory dysfunction group; P2 and P3 values were adjusted by logistic regression analysis for age, gender, and smoking

ref reference