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Table 2 Item distribution based on two observations for each case – German version of the QoL-AD proxy and QoL-AD NH proxy

From: Item distribution and inter-rater reliability of the German version of the quality of life in Alzheimer’s disease scale (QoL-AD) proxy for people with dementia living in nursing homes

QoL-AD proxy (proxy-proxy perspective), n = 73

QoL-AD NH proxy (proxy-person perspective), n = 73

No.

Item

response options

descriptive

No.

Item

response options

descriptive

How do you judge …

poor

fair

good

excellent

missing

mean (±SD)

How do you think the resident would judge his/her …

poor

fair

good

excellent

missing

mean (±SD)

1

2

3

4

1

2

3

4

1.

… the physical health of the resident?

27

41

67

11

0

2.42

(±0.88)

1.

… physical health?

39

49

47

11

0

2.21

(±0.92)

2.

… the energy of the resident?

37

39

63

7

0

2.27

(±0.90)

2.

… energy?

29

54

59

4

0

2.26

(±0.81)

3.

… the mood of the resident?

25

62

55

4

0

2.26

(±0.77)

3.

… mood?

27

55

53

10

1

2.32

(±0.86)

4.

… the living situation of the resident?

4

23

103

16

0

2.90

(±0.61)

4.

… living situation?

23

44

70

9

0

2.45

(±0.83)

5.

… the memory of the resident?

72

55

17

2

0

1.65

(±0.74)

5.

… memory?

27

38

67

14

0

2.47

(±0.90)

6.

… the family of the resident?

36

28

45

37

0

2.57

(±1.12)

6.

… family?

23

25

59

37

2

2.76

(±1.01)

7.

… the marriage of the resident?

55

14

39

37

1

2.40

(±1.23)

         

8.

… the friends of the resident?

61

37

35

8

5

1.93

(±0.95)

7.

… friends?

34

27

51

25

9

2.49

(±1.06)

9.

… his−/herself as a whole?

4

63

72

7

0

2.56

(±0.63)

8.

… -self overall?

10

44

72

20

0

2.70

(±0.79)

10.

… the ability of the resident to do chores around the house?

93

40

13

0

0

1.45 a

(±0.65)

9.

… ability to keep busy?

21

46

69

9

1

2.46

(±0.82)

11.

… the ability of the resident to do things for fun?

78

36

29

3

0

1.71

(±0.86)

10.

… ability to do things for fun?

21

64

55

6

0

2.32

(±0.77)

12.

… the money of the resident?

13

38

35

18

42

2.56

(±0.92)

         
         

11.

b… people who work here?

12

25

92

16

1

2.77

(±0.75)

         

12.

… ability to take care of him−/herself?

43

38

54

11

0

2.23

(±0.96)

         

13.

… ability to live with others?

19

58

62

7

0

2.39

(±0.77)

         

14.

… ability to make choices in his/her life?

26

41

62

17

0

2.48

(±0.92)

13.

… life as a whole?

8

69

66

1

2

2.42

(±0.61)

15.

… life as a whole?

13

60

67

6

0

2.45

(±0.72)

Frequencies of the response options and missing’s in total

n

513

545

639

151

50

  

Frequencies of the response options and missing’s in total

n

367

668

939

202

14

  

%

27.76

29.49

34.58

8.17

2.63

  

%

16.87

30.70

43.15

9.28

0.64

  

Qol-AD proxy score

1 Rating

    

25

30.13

(±5.72) c

Qol-AD NH proxy score

1 Rating

    

7

38.76

(±7.84) c

2 Rating

    

24

30.08

(±5.76) c

2 Rating

    

4

35.27

(±7.11) c

  1. aItem with floor effect, i.e. mean in the first 20% of the scale (< 1.6)
  2. bThe question begins with: ‘How satisfied do you think the residents feels about the …’
  3. cOnly observations without any missing value were included (Qol-AD proxy: n = 39; Qol-AD NH proxy: n = 62)