Clinical outcomes and drug profiles at a mean of 11 years after disease onset
| Total (%) | Median time to outcome (years) | Alive (n) | Death (n) | |
| Dementia (n (%)) | 83 (49) | 13 | 40 | 43 |
| Psychosis (n (%)) | 81 (47) | 13 | 50 | 31 |
| Sensory compliant (n (%)) | 103 (60) | 9 | 75 | 28 |
| Postural hypotension (n (%)) | 58 (34) | 16 | 45 | 13 |
| Postural instability (PIPon) (n (%)) | 108 (63) | 11 | 66 | 42 |
| Freezing of gait (n (%)) | 148 (87) | 6 | 105 | 43 |
| Falls (n (%)) | 101 (59) | 11 | 70 | 31 |
| Swallowing problem (n (%)) | 102 (60) | 11 | 65 | 37 |
| Speech disturbance (n (%)) | 117 (68) | 10 | 87 | 37 |
| Institutionalised (n (%)) | 46 (27) | – | 17 | 29 |
| Dopamine exposure (n (%)) | 83 (49) | – | 70 | 13 |
| Selegiline exposure (n (%)) | 28 (16) | – | 24 | 4 |
PIPon, postural instability persisted during ‘on’ medication state.