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Table 3 Item distribution (range 0–3) of nine QUALIDEM subscales for people with mild to severe dementia, including missing values and mean/SD (n = 344)

From: Item distribution, scalability and internal consistency of the QUALIDEM quality of life assessment for patients with dementia in acute hospital settings

Item Nr

Subscale (Item)

0

1

2

3

Missing values

Item difficulty

A

Care relationship

      

4

Rejects help from nursing assistantsa

20 (5.8%)

40 (11.6%)

48 (14.0%)

217 (63.1%)

19 (5.5%)

0.81

7

Is angrya

33 (9.6%)

70 (20.3%)

82 (23.8%)

157 (45.6%)

2 (0.6%)

0.69

14

Has conflicts with nursing assistantsa

29 (8.4%)

66 (19.2%)

76 (22.1%)

170 (49.4%)

3 (0.9%)

0.71

17

Accuses othersa

26 (7.6%)

55 (16.0%)

61 (17.7%)

183 (53.2%)

19 (5.5%)

0.74

24

Appreciates help he or she receivesb

29 (8.4%)

57 (16.6%)

90 (26.2%)

162 (47.1%)

6 (1.7%)

0.71

31

Accepts helpb

11 (3.2%)

33 (9.6%)

90 (26.2%)

194 (56.4%)

16 (4.7%)

0.81

33

Criticizes the daily routinea

16 (4.7%)

38 (11.0%)

60 (17.4%)

225 (65.4%)

5 (1.5%)

0.82

B

Positive affect

      

1

Is cheerfulb

52 (15.1%)

78 (22.7%)

102 (29.7%)

98 (28.5%)

14 (4.1%)

0.58

5

Radiates satisfactionb

37 (10.8%)

72 (20.9%)

124 (36.0%)

105 (30.5%)

6 (1.7%)

0.63

8

Is capable of enjoying things in daily lifeb

25 (7.3%)

81 (23.5%)

134 (39.0%)

100 (29.1%)

4 (1.2%)

0.64

10

Is in a good moodb

39 (11.3%)

84 (24.4%)

124 (36.0%)

94 (27.3%)

3 (0.9%)

0.60

21

Has a smile around the mouthb

38 (11.0%)

85 (24.7%)

109 (31.7%)

98 (28.5%)

14 (4.1%)

0.60

40

Mood can be influenced in positive senseb

30 (8.7%)

97 (28.2%)

105 (30.5%)

109 (31.7%)

3 (0.9%)

0.62

C

Negative affect

      

6

Makes an anxious impressiona

16 (4.7%)

16 (4.7%)

40 (11.6%)

255 (74.1%)

17 (4.9%)

0.88

11

Is sada

8 (2.3%)

18 (5.2%)

50 (14.5%)

248 (72.1%)

20 (5.8%)

0.89

23

Criesa

82 (23.8%)

69 (20.1%)

67 (19.5%)

123 (35.8%)

3 (0.9%)

0.56

D

Restless tense behavior

      

2

Makes restless movementsa

23 (6.7%)

50 (14.5%)

69 (20.1%)

196 (57.0%)

6 (1.7%)

0.77

19

Is restlessa

13 (3.8%)

20 (5.8%)

51 (14.8%)

258 (75.0%)

2 (0.6%)

0.87

22

Has tense body languagea

27 (7.8%)

44 (12.8%)

76 (22.1%)

182 (52.9%)

15 (4.4%)

0.75

E

Positive self-image

      

27

Indicates he or she would like more helpa

7 (2.0%)

21 (6.1%)

55 (16.0%)

243 (70.6%)

18 (5.2%)

0.88

35

Indicates not being able to do anythinga

13 (3.8%)

50 (14.5%)

90 (26.2%)

173 (50.3%)

18 (5.2%)

0.77

37

Indicates feeling worthlessa

19 (5.5%)

23 (6.7%)

27 (7.8%)

251 (73.0%)

24 (7.0%)

0.86

F

Social relations

      

3

Has contact with other patientsb

68 (19.8%)

95 (27.6%)

91 (26.5%)

68 (19.8%)

22 (6.4%)

0.50

12

Responds positively when approachedb

6 (1.7%)

39 (11.3%)

110 (32.0%)

185 (53.8%)

4 (1.2%)

0.80

18

Takes care of other patientsb

233 (67.7%)

34 (9.9%)

13 (3.8%)

16 (4.7%)

48 (14.0%)

0.12

25

Cuts himself/herself off from environmenta

30 (8.7%)

59 (17.2%)

60 (17.4%)

179 (52.0%)

16 (4.7%)

0.73

29

Is on friendly terms with one or more patientsb

135 (39.2%)

60 (17.4%)

65 (18.9%)

56 (16.3%)

28 (8.1%)

0.38

34

Feels at ease in the company of othersa

37 (10.8%)

45 (13.1%)

32 (9.3%)

228 (66.3%)

2 (0.6%)

0.77

G

Social Isolation

      

16

Is rejected by other patientsa

81 (23.5%)

53 (15.4%)

76 (22.1%)

130 (37.8%)

4 (1.2%)

0.58

20

Openly rejects contact with othersa

17 (4.9%)

23 (6.7%)

48 (14.0%)

241 (70.1%)

15 (4.4%)

0.85

32

Calls outa

39 (11.3%)

66 (19.2%)

64 (18.6%)

173 (50.3%)

2 (0.6%)

0.69

H

Feeling at home

      

13

Indicates that he or she is boreda

19 (5.5%)

26 (7.6%)

45 (13.1%)

235 (68.3%)

19 (5.5%)

0.84

28

Indicates feeling locked upa

2 (0.6%)

20 (5.8%)

55 (16.0%)

237 (68.9%)

30 (8.7%)

0.89

36

Feels at home on the wardb

222 (64.5%)

36 (10.5%)

41 (11.9%)

20 (5.8%)

25 (7.3%)

0.19

39

Wants to get off the warda

75 (21.8%)

78 (22.7%)

51 (14.8%)

120 (34.9%)

20 (5.8%)

0.59

I

Having something to do

      

26

Finds things to do without help from othersb

87 (25.3%)

83 (24.1%)

93 (27.0%)

65 (18.9%)

16 (4.7%)

0.47

38

Enjoys helping with chores on the wardb

145 (42.2%)

31 (9.0%)

28 (8.1%)

16 (4.7%)

124 (36.0%)

0.20

  1. aCODING of items is 0 = often, 1 = sometimes, 2 = rarely, 3 = never
  2. bCODING of items is 0 = never, 1 = rarely, 2 = sometimes, 3 = often