| Frequency | Percent | Cumulative Percent |
None | 3 | 2.0 | 2.0 |
Mild | 106 | 70.2 | 72.2 |
Moderate | 36 | 23.8 | 96.0 |
Severe | 6 | 4.0 | 100.0 |
Total | 151 | 100.0 |
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