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Interval Validity Failure Comparison to Published DCEs.
| Test type | DCE pilot study % failures | Published DCE % failures (mean [SD]) |
|---|---|---|
| Within-set dominated pairs | 13 | 18 (20) |
| Across-set dominated pairs | 0 | 6 (9) |
| Dominated preferences | 31 | 22 (14) |
| Straight-lining | 8 | 7 (11) |
Note. DCE = discrete choice experiment.
