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Demographics of the study population.
| Participants, n | Females, n (%) |
Mean age at enrolment, years | Mean age at diagnosis, years | Heredity, n (%) |
|
|---|---|---|---|---|---|
| Controls | 509 | 290 (57.3) | 71⋆ | NA | NA |
| PD | 501 | 184 (36.7) | 67.2 | 59.5 | 88 (28.5)⋆⋆ |
PD: Parkinson's disease; NA: not applicable; ⋆age was unknown for 95 blood donors; ⋆⋆estimation based on 319 individuals for which this information was known.
