Outlining a Population “at Risk” of Parkinson’s Disease: Evidence from a Case-Control Study

Table 1

Demographics and main risk factors in our study population.

⁢Variable	⁢Group			⁢
	Total	PD	Control
Sex				ns
Male (%)	50.5	51	50
Female (%)	49.5	49	50
Age at interview				ns
Mean ± st. dev.
40–70 y (%)	49.7	47	53
71–100 y (%)	50.3	53	47
Family history of PD				<0.000001
Negative (%)	87.2	80.3	94
Positive (%)	12.8	19.7	6
Toxicants exposure				<0.001
No (%)	62	56	67.3
Yes (%)	38	44	32.7
Smoking status				<0.00001
Never (%)	48.8	58.3	39.3
Former (%)	15.7	8.7	22.7
Current (%)	35.5	33	38
Alcohol consumption				<0.05
No (%)	51.5	58.3	44.7
<200 mL/day (%)	45.8	38.7	53.0
200–500 mL/day (%)	2.7	3.0	2.3