Table 2.

Associations of childhood and adulthood direct pesticide application with PD in negative history families.

	% Exposed*
	Cases, n = 228	Controls, n = 215	p for trend (GEE model 1)**	OR and 95% CI (GEE model 2)**
History of pesticide use
Ever	62.7	47.4		1.80	1.20–2.70
Never	37.3	52.6		1.00	Referent
Frequency (days/year)			<0.001
>10	24.1	11.2		2.55	1.38–4.73
4–10	15.8	13.0		1.58	0.84–2.99
<4	19.7	18.6		1.52	0.89–2.62
Never	37.3	52.6		1.00	Referent
Duration (years)			0.012
>25	21.9	13.5		1.98	1.14–3.46
10–25	18.4	18.6		1.32	0.76–2.28
<10	17.5	11.6		2.04	1.08–3.88
Never	37.3	52.6		1.00	Referent
Cumulative exposure (days)			<0.001
>179	21.9	10.7		3.25	1.84–5.73
42–179	18.0	15.3		1.46	0.80–2.68
<42	15.4	14.0		1.48	0.83–2.66
Never	37.3	52.6		1.00	Referent

*Column totals may not sum to 100 due to rounding or missing data.

**GEE model adjusted for AAE, sex, cigarette smoking, and caffeine consumption.