Table 2.

Crude Incidence rate of Parkinson’s Disease

	Person-months of follow up	#Cases of Parkinson’s Disease	Parkinson’s Disease Incidence Rate per 100,000 person-months	Parkinson’s Disease Incidence Rate per 1000 person-years
Gout	3,649,618	1129	30.9	3.71
No Gout	119,341,989	21,507	18.0	2.16

Incident Parkinson’s Disease was defined as a new diagnosis of PD with an absence of PD diagnosis in the baseline 365-day period, 1/1/2005 to 12/31/2005