TABLE 2.

Risk-factor-associated ORs for PD (95% CI)

Variable	All Subjectsa	Menb
	(Case n = 87; Control n = 343)	(Case n = 63; Control n = 261)
Cigarette smoking	0.5 (0.3–0.9)	0.4 (0.2–0.8)
GSTT1*0 genotype	1.5 (0.9–2.6)	1.7 (0.9–3.2)
GSTM1*0 genotype	0.8 (0.5–1.3)	0.5 (0.3–0.9)
Paraquat use (ever versus never)	—d	2.6 (1.3–5.0)
Paraquat total years of lifetime use:
Never used	—d	1.0 (ref)
Used ≤ medianc		2.5 (1.1–5.8)
Used > median		3.1 (1.3–7.2)
P trend		0.004

^aAdjusted for state, age, smoking, and gender.

^bAdjusted for state, age, and smoking.

^cMedian use = 4 years.

^dNo women used paraquat.