Table 1: Demographic characterization of case and controls.

Number of participants (n) Females (%) Age (years) Age of Onset (years) Familial history of PD (%)
Control 599 57.9 72.8 N/A N/A
PD 502 40.2 67.6 59.4 31.8

PD= Parkinson’s disease, Age of onset was defined as the age when the patient received a diagnosis, familial history was self-reported by interview, n= number of individuals.