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| Frequency | Percent | Valid Percent | Cumulative Percent | ||
|---|---|---|---|---|---|
| Valid | I noticed a significant difference | 29 | 3.6 | 3.8 | 3.8 |
| I noticed some difference | 69 | 8.5 | 9.1 | 12.9 | |
| I did not notice any difference | 661 | 81.0 | 87.1 | 100.0 | |
| Total | 759 | 93.0 | 100.0 | ||
| Missing | 99 | 57 | 7.0 | ||
| Total | 816 | 100.0 | |||