Prevalence of factors that contributed towards the risk score
| Factor | All participants (n=1324) | 100 with highest risk | 100 with lowest risk | RR/OR from systematic review11 |
|---|---|---|---|---|
| Male | 519 (39%) | 83 | 11 | See methods |
| Age in years (median, IQR) | 67 (64–71) | 70 (67–74) | 63 (62–65) | See methods |
| Smoker | ||||
| Current | 51 (4%) | 2 | 24 | 0.44 |
| Former | 523 (39%) | 45 | 41 | 0.78 |
| Never | 750 (57%) | 53 | 35 | 1.00 |
| Family history of PD | 262 (20%) | 58 | 0 | 4.45 |
| Drink coffee | 1187 (90%) | 82 | 99 | 0.67 |
| Drink alcohol | 1138 (86%) | 87 | 87 | 0.90 |
| Hypertension | 348 (26%) | 29 | 42 | 0.74 |
| NSAID use | 83 (6%) | 2 | 15 | 0.83 |
| CCB use | 155 (12%) | 14 | 14 | 0.90 |
| β Blocker use | 103 (8%) | 14 | 5 | 1.28 |
| Constipation | 82 (6%) | 24 | 1 | 2.34 |
| Head injury | 361 (27%) | 52 | 6 | 1.58 |
| Depression/anxiety | 254 (19%) | 44 | 1 | 1.86 |
| Erectile dysfunction (men) | 181 (35%) | 72 | 0 | 3.80 |
CCB, calcium channel blockers; NSAID, non-steroidal anti-inflammatory drug; PD, Parkinson's disease.