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Table 2 Missing values and ceiling effects

From: Comparing the psychometric properties of EQ-5D-3L and EQ-5D-5L proxy ratings by informal caregivers and a health professional for people with dementia

EQ-5D domains and utility value

Missing values

Ceiling effect

Ceiling effect reduction

3L (n, %)

5L (n, %)

3L (n, %)

5L (n, %)

Absolute (%) 3L%-5L%

Relative (%) Red n/3L n

Proxy-rating (caregiver)

Mobility

1 (0.9)

1 (0.9)

26 (24.5)

16 (15.1)

9.4

38.5

Self-care

1 (0.9)

1 (0.9)

37 (34.9)

29 (27.4)

7.5

21.6

Usual activities

1 (0.9)

1 (0.9)

28 (26.4)

17 (16.0)

10.4

39.2

Pain/discomfort

1 (0.9)

1 (0.9)

40 (37.7)

33 (31.1)

6.6

17.5

Anxiety/depression

1 (0.9)

1 (0.9)

60 (56.6)

50 (47.2)

9.4

16.6

Overall (utility)

1 (0.9)

1 (0.9)

9 (8.5)

4 (3.8)

4.7

55.5

Proxy-rating (care manager)

Mobility

10 (0.7)

11 (0.8)

33 (25.0)

16 (12.1)

12.9

51.5

Self-care

11 (0.8)

11 (0.8)

41 (30.8)

24 (18.1)

12.7

41.5

Usual activities

11 (0.8)

11 (0.8)

11 (8.3)

4 (3.0)

5.3

63.6

Pain/discomfort

11 (0.8)

11 (0.8)

85 (63.9)

58 (43.6)

20.3

31.8

Anxiety/depression

11 (0.8)

11 (0.8)

72 (54.6)

55 (41.4)

13.2

23.6

Overall (utility)

11 (0.8)

11 (0.8)

4 (3.0)

1 (0.8)

2.2

75.0