Table 2.

Multivariate risk analysis for PD with depression^a.

Factors	Genotype	B	P	OR	95% CI
					Lower	Upper
5-HTTLPR			0.029
	SL vs. SS	−0.359	0.122	0.699	0.443	1.101
	LL vs. SS	−1.212	0.010	0.298	0.118	0.749
	Rare vs. SS	0.304	0.509	1.355	0.550	3.339
Constant		0.325	0.022	1.384

CI, confidence interval; OR, odds ratio; PD, Parkinson's disease.

^aAnalyzed by binary logistic regression with gender, age at onset, disease duration, 5-HTTLPR, rs25531, and the interaction between the two polymorphisms as covariates.