Table 2.
Demographics, personality characteristics, fibromyalgia severity, anxiety, depression and health-related quality of life: cluster comparisons.
| Variable | FM patients Cluster1 (N = 37) | FM patients Cluster2 (N = 46) | Test of significance |
|---|---|---|---|
| Continuous | m ± SD | m ± SD | t-test |
| Age | 50.46 ± 9.75 | 53.30 ± 11.54 | -1.195 |
| Education (years) | 10.31 ± 3.16 | 10.87 ± 3.60 | -0.717 |
| TCI HA | 26.86 ± 4.26 | 17.85 ± 4.77 | 8.971c |
| TCI NS | 15.81 ± 5.47 | 17.85 ± 5.02 | -1.766 |
| TCI RD | 14.22 ± 3.50 | 15.98 ± 3.10 | -2.430a |
| TCI P | 5.40 ± 1.36 | 5.02 ± 1.60 | 1.159 |
| TCI SD | 23.16 ± 4.91 | 32.35 ± 4.01 | -9.384c |
| TCI C | 30.43 ± 5.43 | 34.93 ± 3.68 | -4.490c |
| TCI ST | 15.92 ± 5.61 | 15.70 ± 5.51 | 0.182 |
| FIQ Total Score | 67.66 ± 14.80 | 56.57 ± 17.24 | 3.100b |
| HADS Total Score | 22.05 ± 5.90 | 13.76 ± 7.45 | 5.516c |
| HADS Anxiety | 11.16 ± 3.83 | 6.91 ± 3.79 | 5.048c |
| HADS Depression | 10.86 ± 3.14 | 6.85 ± 4.28 | 4.761c |
| SF-36 Physical Activity | 45.95 ± 20.10 | 53.04 ± 22.05 | -1.516 |
| SF-36 Role-physical | 14.53 ± 24.56 | 22.83 ± 30.20 | -1.350 |
| SF-36 Bodily Pain | 27.48 ± 18.37 | 34.06 ± 16.41 | -1.723 |
| SF-36 General Health | 28.95 ± 19.71 | 41.78 ± 19.88 | -2.935b |
| SF-36 Vitality | 26.08 ± 14.87 | 35.98 ± 16.69 | -2.818a |
| SF-36 Social Functioning | 40.88 ± 19.46 | 52.45 ± 25.36 | -2.285a |
| SF-36 Role-emotional | 27.03 ± 35.87 | 52.17 ± 41.37 | -2.918b |
| SF-36 Mental Health | 43.89 ± 18.07 | 60.00 ± 17.30 | -4.133c |
| SF-36 Health Change | 70.27 ± 27.54 | 64.13 ± 27.71 | 1.006 |
| Categorical | n (%) | n (%) | χ2 statistic |
| Marital status | 2.112 | ||
| single | 1 (2.7) | 5 (10.9) | |
| married | 29 (78.4) | 34 (73.9) | |
| divorced | 6 (16.2) | 6 (13.0) | |
| widow | 1 (2.7) | 1 (2.2) | |
| Working status | 2.319 | ||
| Student | 1 (2.8) | 0 | |
| Employed | 19 (52.8) | 26 (57.8) | |
| Unemployed | 2 (5.6) | 2 (4.4) | |
| Retired | 5 (13.9) | 9 (20.0) | |
| Housewife | 9 (25.0) | 8 (17.8) | |
| Missing data | 1 | 1 | |
FM, fibromyalgia; TCI, Temperament and Character Inventory; FIQ, Fibromyalgia Impact Questionnaire; HADS, Hospital Anxiety and Depression Scale; and SF-36, Short Form Health Survey 36. ap-value < 0.05. bp-value < 0.005. cp-value < 0.001.