TABLE 6.

Univariate and multivariate logistic regression analysis of influencing factors for PDD.

	Variables	OR	95% CI	P
Univariate	Age	1.059	1.007–1.113	0.024
	Education
	Junior high school and below	Reference
	Senior middle school	0.250	0.083–0.749	0.013
	College and above	0.059	0.006–0.411	0.005
	Disease duration	0.988	0.869–1.124	0.857
	H&Y stage	1.730	0.949–3.153	0.074
	UPDRS total	1.019	0.999–1.038	0.061
	UPDRS part III	1.028	0.998–1.060	0.070
	OH	3.887	1.387-10.892	0.010
	LF Gain (%/mm Hg) (in standing)	3.292	1.204–9.002	0.020
Multivariate	Education
	Junior high school and below	Reference
	Senior middle school	0.231	0.067–0.795	0.020
	College and above	0.072	0.008–0.634	0.018
	LF Gain (%/mm Hg) (in standing)	3.756	1.241–11.367	0.019

OR, odds ratio; CI, confidence interval. Variables with a P value of < 0.1 in univariate analysis were eligible for inclusion in the multiple logistic regression model.