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Breakdown of individual distractor performance grouped into categories by frequency of selection (all years combined)
| Distractor functionality by frequency of selection (%) | Number (%) |
|---|---|
| 0 | 341 (17.8) |
| <5 | 721 (37.6) |
| 5–10 | 374 (19.5) |
| 11–20 | 278 (14.5) |
| >20 | 206 (10.7) |
