Table 1 Summary of the sample demographics
Series | n | Age at onset mean ± SD (range) in years | Age at clinical assessment mean ± SD (range) in years | Male: Female ratio | Caucasian (%) |
|---|---|---|---|---|---|
Total PD | 478 | 61.3 ± 10.6 (40–86) | 67.6 ± 10.0 (41–90) | 297:181 | 99 |
Familial PD | 126 | 59.0 ± 10.9 (40–85) | 65.8 ± 11.0 (42–86) | 73:53 | 89 |
EOPD | 83 | 44.68 ± 2.95 (38–49) | 53.4 ± 6.6 (43–71) | 51:32 | 99 |
Control | 337 | 64.8 ± 10.2 (30–85) | 117:220 | 92 |