Table 3

Characteristics of 2-steps 3-cluster analysis solution for 164 subjects with no medical or psychiatric exclusions.

Characteristic

Cluster 1 Most Severe (n = 30)

Cluster 2 Intermediate (n = 67)

Cluster 3 Least Severe (n = 67)


SF-36 Scales (mean ± sd)

Physical function

49.5 ± 21.8

71.8 ± 20.1

91.0 ± 10.3

Role physical

12.5 ± 26.9

48.1 ± 36.0

92.5 ± 19.5

Bodily pain

39.5 ± 18.3

53.7 ± 16.5

79.4 ± 15.6

General health

45.4 ± 19.3

67.4 ± 13.8

85.3 ± 12.6

Vitality

14.3 ± 11.0

34.6 ± 15.8

69.6 ± 16.0

Social function

45.4 ± 24.0

67.9 ± 18.4

96.3 ± 8.7

Role emotional

47.8 ± 41.7

74.1 ± 35.2

96.0 ± 13.6

Mental health

61.5 ± 19.5

74.4 ± 13.5

86.9 ± 9.1

MFI Scales (mean ± sd)

General fatigue

18.4 ± 1.4

15.1 ± 2.7

8.7 ± 3.2

Physical fatigue

15.4 ± 2.7

11.6 ± 2.8

6.7 ± 2.1

Mental fatigue

15.9 ± 3.5

10.3 ± 3.9

6.6 ± 2.7

Reduced motivation

13.4 ± 4.0

10.3 ± 3.0

6.2 ± 2.0

Reduced activity

15.8 ± 3.3

11.9 ± 3.5

5.9 ± 2.0

Symptom Inventory (mean ± sd)

52.2 ± 24.8

21.6 ± 12.6

7.0 ± 8.5


All clusters were significantly different from the other clusters with respect to all scales

Reeves et al. BMC Medicine 2005 3:19   doi:10.1186/1741-7015-3-19

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