Table VI.

Results of multivariate logistic regression analysis of factors associated with PD.

Variables	Odds Ratio	95%CI for Odds Ratio		p-value
		Lower	Upper
Tea consumption	0.849	0.739	0.975	0.02
Sleep hours	1.38	1.009	1.910	0.044
Stress	13.51	4.79	38.15	0.0001
Evening work	4.67	1.29	16.86	0.019
Coffee consumption	0.51	0.28	0.904	0.021