Table 3.

Results from logistic regression evaluated the association between p-p DDE serum levels and PD.

Tertiles	p-pDDE serum levels (ng/mL)
	Unadjusted			Adjusted
	OR	95 %CI	p-value	OR	95 %CI	p-value
Q1 (reference)	1.00	–	–	1.00	–	–
Q2	0.929	0.399−2.159	0.863	0.964	0.404−2.304	0.935
Q3	1.090	0.527−2.257	0.663	1.194	0.538−2.649	0.663

OR, odds ratio; CI, confidence interval.

*Adjusted model for age, sex.