| Wexner Constipation Score | ||||||||
|---|---|---|---|---|---|---|---|---|
| Study | Measure | Patients | Baseline | One year | 'Off' period | 'On' period | Change (%) | Notes |
| Kenefick 2002# | Mean (range) | 2 | 21 (20 to 22) | 5 (4 to 6) | 14 (13 to 15) | 9 (5 to 13) | ‐5 (‐36%) | The score ranges from 0 (normal) to 30 (severe constipation) |
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