Characteristics of the study population
| Normal controls | Parkinson’s disease | |||
|---|---|---|---|---|
| Total number analysed | 224 | 206 | ||
| Age (years)* | 65.4 (9.4) | 66.3 (9.6) | ||
| Age range (years) | 39 to 93 | 40 to 92 | ||
| Age of onset (years)* | – | 60.5 (10.7) | ||
| Age of onset range (years) | – | 32 to 85 | ||
| Male | Female | Male | Female | |
|---|---|---|---|---|
| *Mean (SD). | ||||
| Number | 119 | 105 | 110 | 96 |
| Age (years)* | 63.5 (9.7) | 67.5 (8.6) | 64.2 (9.6) | 68.8 (9.0) |
| Age range (years) | 39 to 88 | 45 to 93 | 40 to 84 | 47 to 92 |
| Age of onset (years)* | – | 57.2 (10.1) | 64.0 (10.1) | |
| Age of onset range (years) | – | 32 to 81 | 33 to 85 | |
| No of individuals with age of onset ⩾60 years | – | 45 | 65 | |
| No of individuals with age of onset ⩽55 years | – | 41 | 16 | |