| Soiling/week | ||||||
|---|---|---|---|---|---|---|
| Study | Measure | Patients | 'Off' period | 'On' period | Change (%) | Notes |
| Sørensen 2010# | (95% CI for mean) | 7 | 1.86 (0.29‐3.43) | 0.71 (‐0.69‐2.11) | ‐1.15 (‐62%) | |
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