Table 3 Characteristics of 2-steps 3-cluster analysis solution for 164 subjects with no medical or psychiatric exclusions.
From: Chronic Fatigue Syndrome – A clinically empirical approach to its definition and study
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 |