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Table 2 Average cue levels and weights for each of the 5 SEIQOL-DW cues selected by respondents at baseline.

From: Response shift masks the treatment impact on patient reported outcomes (PROs): the example of individual quality of life in edentulous patients

Cues* T1 – pre-test mean level ± SD.
mean weight ± SD.
T2 – post test mean level ± SD.
mean weight ± SD.
T1 – then-test mean level ± SD.
mean weight ± SD.
P-value Levels # P-value Weights #
1     pre-post: .359 pre-post: .026
level 73.8 ± 28.3 74.6 ± 22.3 69.7 ± 26.9 pre-then: .076 pre-then: .033
weight 29.6 ± 12.4 26.9 ± 9.2 26.7 ± 9.79 post-then: .005 post-then: .649
2     pre-post: .088 pre-post: .404
level 76.2 ± 24.1 71.1 ± 26.2 69.0 ± 24.7 pre-then : .003 pre-then .152
weight 23.3 ± 10.59 22.3 ± 9.47 21.8 ± 8.61 post-then: .106 post-then: .598
3     pre-post: .069 pre-post: .801
level 75.7 ± 27.1 70.8 ± 24.0 70.1 ± 24.7 pre-then: .006 pre-then: .534
weight 20.2 ± 9.91 20.6 ± 8.85 21.0 ± 8.97 post-then: .403 post-then: .808
4     pre-post: .269 pre-post: .223
level 72.7 ± 24.7 68.1 ± 26.4 67.9 ± 23.8 pre-then: .036 pre-then: .073
weight 15.0 ± 7.91 16.2 ± 8.27 16.6 ± 7.75 post-then:.424 post-then:.576
5     pre- post:.105 pre- post:.012
level 74.2 ± 22.6 69.5 ± 25.7 68.7 ± 23.9 pre-then: .028 pre-then:.015
weight 12.3 ± 6.05 14.2 ± 7.03 14.3 ± 6.50 post-then: .635 post-then: .777
  1. * Cues in descending order of importance at T1
  2. # The traditional reported treatment effect = post-test minus pre-test score
  3. # The response shift effect = pre-test minus then-test score
  4. # The actual treatment effect = post-test minus then-test score