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Table 3 Cluster Analysis

From: The ChQoL questionnaire: an Italian translation with preliminary psychometric results for female oncological patients

    

Centroids

  
  

n. of clusters

cluster 1

cluster 2

cluster 3

  

Facet

Item

by item

by Facet

mean

(sd)

mean

(sd)

mean

(sd)

outliers

extr mean

Complexion

1

3

2

21.0

(10.5)

50.6

(8.4)

89.5

(7.1)

--

55.3

 

2

3

2

13.9

(7.8)

44.8

(7.8)

80.4

(11.3)

--

47.1

 

3

2

2

35.6

(14.3)

-

-

79.3

(11.2)

--

57.5

 

4

3

2

14.7

(9.5)

47.1

(7.8)

83.0

(10.2)

--

48.9

Sleep

5

2

2

29.4

(16.8)

-

-

85.2

(10.7)

--

57.3

 

6

2

2

29.6

(17.1)

-

-

85.4

(10.0)

--

57.5

 

7

2

2

36.7

(16.4)

-

-

83.8

(9.2)

--

60.3

Stamina

8

3

3

15.1

(10.1)

47.1

(7.3)

83.7

(9.5)

--

49.4

 

9

2

3

15.8

(11.0)

-

-

65.6

(17.0)

--

40.7

 

10

3

3

15.9

(9.8)

50.5

(8.7)

85.5

(8.0)

--

50.7

 

11

2

3

25.7

(15.5)

-

-

79.4

(12.6)

--

52.6

 

12

3

3

12.1

(7.9)

43.4

(8.8)

82.4

(10.2)

--

47.2

 

13

2

3

29.1

(16.7)

-

-

83.7

(11.6)

--

56.4

Appetite

14

2

3

33.8

(15.9)

-

-

84.9

(10.9)

--

59.3

 

15

2

3

36.7

(19.9)

-

-

87.6

(8.2)

--

62.1

 

16

2

3

39.9

(17.0)

-

-

87.1

(8.1)

--

63.5

 

17

2

3

38.6

(16.3)

-

-

88.2

(7.6)

--

63.4

Climate Adapt.

18

2

2

35.9

(18.1)

-

-

85.9

(9.2)

--

60.9

 

19

3

2

16.7

(9.8)

54.5

(10.3)

88.5

(6.7)

--

52.6

 

20

2

2

33.5

(17.1)

-

-

85.2

(10.0)

--

59.4

Consciousness

21

2

2

42.0

(17.1)

-

-

86.0

(9.2)

--

64.0

 

22

2

2

48.5

(16.1)

-

-

88.8

(6.6)

1.5%

68.7

 

23

2

2

51.0

(17.2)

-

-

89.6

(5.6)

3.0%

70.3

Thinking

24

2

2

36.1

(18.0)

-

-

81.6

(10.8)

--

58.8

 

25

2

2

41.0

(16.8)

-

-

85.1

(9.3)

--

63.1

 

26

2

2

54.0

(15.8)

-

-

89.4

(6.2)

2.0%

71.7

 

27

2

2

45.3

(13.7)

-

-

85.4

(9.1)

0.5%

65.3

 

28

2

2

44.6

(13.7)

-

-

85.5

(8.6)

--

65.1

Spirit

29

2

3

47.5

(15.0)

-

-

87.1

(7.6)

1.0%

67.3

 

30

2

3

46.6

(14.3)

-

-

86.0

(8.6)

--

66.3

Verbal Expr.

31

2

2

52.3

(12.7)

-

-

87.0

(7.2)

2.0%

69.7

 

32

2

2

46.1

(16.7)

-

-

87.2

(7.2)

0.5%

66.6

Joy

33

3

2

14.9

(8.7)

50.9

(9.6)

85.3

(8.5)

--

50.1

 

34

3

2

18.7

(9.8)

53.6

(8.3)

83.2

(9.7)

--

51.0

 

35

2

2

35.5

(16.8)

-

-

83.6

(10.6)

--

59.5

 

36

2

2

64.4

(13.0)

-

-

91.5

(4.8)

3.9%

77.9

Anger

37

2

2

39.6

(19.8)

-

-

85.5

(8.4)

--

62.6

 

38

2

2

46.8

(16.8)

-

-

87.8

(7.3)

3.0%

67.3

 

39

2

2

36.0

(18.8)

-

-

84.9

(9.7)

--

60.5

 

40

2

2

42.0

(16.0)

-

-

87.5

(8.4)

--

64.7

 

41

3

2

12.2

(10.3)

52.3

(9.0)

87.9

(7.4)

--

50.0

Depression

42

2

2

14.6

(9.7)

-

-

63.5

(17.7)

--

39.1

 

43

3

2

16.2

(10.8)

55.8

(10.6)

88.9

(6.7)

--

52.5

 

44

2

2

35.8

(18.7)

-

-

87.1

(9.6)

--

61.5

 

45

2

2

43.2

(19.3)

-

-

88.4

(7.2)

0.5%

65.8

 

46

3

2

16.7

(10.4)

56.3

(10.6)

88.0

(6.8)

--

52.3

 

47

2

2

34.4

(17.8)

-

-

82.1

(10.8)

--

58.2

Fear & Anx.

48

3

3

13.9

(10.0)

57.4

(10.3)

88.4

(6.5)

--

51.2

 

49

3

3

12.8

(9.5)

49.5

(7.6)

84.1

(8.7)

--

48.5

 

50

3

3

12.6

(6.9)

47.3

(8.1)

84.3

(9.7)

--

48.5

  1. Optimal number of clusters identified by Two-step Cluster Analysis, applied either by item (columns 3) or by Facet (column 4). The centroids in the former case are reported, for each cluster. The number of outliers, if any, is expressed as percentage over the 203 respondents. The last column shows the mean of the external centroids (clusters 1 and 3).
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