| Symptom Analogue Score | ||||||||
|---|---|---|---|---|---|---|---|---|
| Study | Measure | Patients | Baseline | One year | 'Off' period | 'On' period | Change (%) | Notes |
| Kenefick 2002# | Mean (range) | 2 | 30 (28 and 32) | 89 (84 and 94) | 32 (30 and 33) | 74 (60 and 88) | 42 (131%) | The score ranges from a best score of 100 to a worst score of 0 |
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