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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